odhcpd: Support for Option NTP and SNTP
[project/odhcpd.git] / src / config.c
index 399922b0ce7b77d29d2616a88f32462256297b28..4e3db86596b82548b8f3ac48dd73164a5cb260c1 100644 (file)
@@ -35,12 +35,17 @@ struct config config = {.legacy = false, .main_dhcpv4 = false,
 #define START_DEFAULT  100
 #define LIMIT_DEFAULT  150
 
+#define HOSTID_LEN_MIN 12
+#define HOSTID_LEN_MAX 64
+#define HOSTID_LEN_DEFAULT HOSTID_LEN_MIN
+
+#define OAF_DHCPV6     (OAF_DHCPV6_NA | OAF_DHCPV6_PD)
+
 enum {
        IFACE_ATTR_INTERFACE,
        IFACE_ATTR_IFNAME,
        IFACE_ATTR_NETWORKID,
        IFACE_ATTR_DYNAMICDHCP,
-       IFACE_ATTR_IGNORE,
        IFACE_ATTR_LEASETIME,
        IFACE_ATTR_LIMIT,
        IFACE_ATTR_START,
@@ -52,6 +57,7 @@ enum {
        IFACE_ATTR_NDP,
        IFACE_ATTR_ROUTER,
        IFACE_ATTR_DNS,
+       IFACE_ATTR_DNS_SERVICE,
        IFACE_ATTR_DOMAIN,
        IFACE_ATTR_FILTER_CLASS,
        IFACE_ATTR_DHCPV4_FORCERECONF,
@@ -59,8 +65,11 @@ enum {
        IFACE_ATTR_DHCPV6_ASSIGNALL,
        IFACE_ATTR_DHCPV6_PD,
        IFACE_ATTR_DHCPV6_NA,
+       IFACE_ATTR_DHCPV6_HOSTID_LEN,
        IFACE_ATTR_RA_DEFAULT,
        IFACE_ATTR_RA_MANAGEMENT,
+       IFACE_ATTR_RA_FLAGS,
+       IFACE_ATTR_RA_SLAAC,
        IFACE_ATTR_RA_OFFLINK,
        IFACE_ATTR_RA_PREFERENCE,
        IFACE_ATTR_RA_ADVROUTER,
@@ -78,6 +87,8 @@ enum {
        IFACE_ATTR_NDPROXY_ROUTING,
        IFACE_ATTR_NDPROXY_SLAVE,
        IFACE_ATTR_PREFIX_FILTER,
+       IFACE_ATTR_PREFERRED_LIFETIME,
+       IFACE_ATTR_NTP,
        IFACE_ATTR_MAX
 };
 
@@ -86,7 +97,6 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
-       [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
        [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
@@ -98,6 +108,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
        [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
+       [IFACE_ATTR_DNS_SERVICE] = { .name = "dns_service", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
        [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
@@ -105,10 +116,13 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DHCPV6_PD] = { .name = "dhcpv6_pd", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DHCPV6_NA] = { .name = "dhcpv6_na", .type = BLOBMSG_TYPE_BOOL },
+       [IFACE_ATTR_DHCPV6_HOSTID_LEN] = { .name = "dhcpv6_hostidlength", .type = BLOBMSG_TYPE_INT32 },
        [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
        [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
+       [IFACE_ATTR_RA_FLAGS] = { .name = "ra_flags", . type = BLOBMSG_TYPE_ARRAY },
+       [IFACE_ATTR_RA_SLAAC] = { .name = "ra_slaac", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
@@ -124,6 +138,8 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
+       [IFACE_ATTR_PREFERRED_LIFETIME] = { .name = "preferred_lifetime", .type = BLOBMSG_TYPE_STRING },
+       [IFACE_ATTR_NTP] = { .name = "ntp", .type = BLOBMSG_TYPE_ARRAY },
 };
 
 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
@@ -138,17 +154,7 @@ const struct uci_blob_param_list interface_attr_list = {
        .info = iface_attr_info,
 };
 
-enum {
-       LEASE_ATTR_IP,
-       LEASE_ATTR_MAC,
-       LEASE_ATTR_DUID,
-       LEASE_ATTR_HOSTID,
-       LEASE_ATTR_LEASETIME,
-       LEASE_ATTR_NAME,
-       LEASE_ATTR_MAX
-};
-
-static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
+const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
        [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
        [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
        [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
@@ -184,41 +190,33 @@ const struct uci_blob_param_list odhcpd_attr_list = {
        .params = odhcpd_attrs,
 };
 
-static int mkdir_p(char *dir, mode_t mask)
-{
-       char *l = strrchr(dir, '/');
-       int ret;
-
-       if (!l)
-               return 0;
-
-       *l = '\0';
-
-       if (mkdir_p(dir, mask))
-               return -1;
-
-       *l = '/';
-
-       ret = mkdir(dir, mask);
-       if (ret && errno == EEXIST)
-               return 0;
-
-       if (ret)
-               syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
-
-       return ret;
-}
+static const struct { const char *name; uint8_t flag; } ra_flags[] = {
+       { .name = "managed-config", .flag = ND_RA_FLAG_MANAGED },
+       { .name = "other-config", .flag = ND_RA_FLAG_OTHER },
+       { .name = "home-agent", .flag = ND_RA_FLAG_HOME_AGENT },
+       { .name = "none", . flag = 0 },
+       { .name = NULL, },
+};
 
 static void set_interface_defaults(struct interface *iface)
 {
+       iface->ignore = true;
+       iface->dhcpv4 = MODE_DISABLED;
+       iface->dhcpv6 = MODE_DISABLED;
+       iface->ra = MODE_DISABLED;
+       iface->ndp = MODE_DISABLED;
        iface->learn_routes = 1;
-       iface->dhcpv4_leasetime = 43200;
+       iface->dhcp_leasetime = 43200;
+       iface->preferred_lifetime = 43200;
        iface->dhcpv4_start.s_addr = htonl(START_DEFAULT);
        iface->dhcpv4_end.s_addr = htonl(START_DEFAULT + LIMIT_DEFAULT - 1);
        iface->dhcpv6_assignall = true;
        iface->dhcpv6_pd = true;
        iface->dhcpv6_na = true;
-       iface->ra_managed = RA_MANAGED_MFLAG;
+       iface->dhcpv6_hostid_len = HOSTID_LEN_DEFAULT;
+       iface->dns_service = true;
+       iface->ra_flags = ND_RA_FLAG_OTHER;
+       iface->ra_slaac = true;
        iface->ra_maxinterval = 600;
        iface->ra_mininterval = iface->ra_maxinterval/3;
        iface->ra_lifetime = -1;
@@ -234,6 +232,9 @@ static void clean_interface(struct interface *iface)
        free(iface->dhcpv4_dns);
        free(iface->dhcpv6_raw);
        free(iface->filter_class);
+       free(iface->dhcpv4_ntp);
+       free(iface->dhcpv6_ntp);
+       free(iface->dhcpv6_sntp);
        memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
        set_interface_defaults(iface);
 }
@@ -252,6 +253,7 @@ static void close_interface(struct interface *iface)
        clean_interface(iface);
        free(iface->addr4);
        free(iface->addr6);
+       free(iface->invalid_addr6);
        free(iface->ifname);
        free(iface);
 }
@@ -270,6 +272,34 @@ static int parse_mode(const char *mode)
                return -1;
 }
 
+static int parse_ra_flags(uint8_t *flags, struct blob_attr *attr)
+{
+       struct blob_attr *cur;
+       unsigned rem;
+
+       blobmsg_for_each_attr(cur, attr, rem) {
+               int i;
+
+               if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+                       continue;
+
+                if (!blobmsg_check_attr(cur, false))
+                        continue;
+
+               for (i = 0; ra_flags[i].name; i++) {
+                       if (!strcmp(ra_flags[i].name, blobmsg_get_string(cur))) {
+                               *flags |= ra_flags[i].flag;
+                               break;
+                       }
+               }
+
+               if (!ra_flags[i].name)
+                       return -1;
+       }
+
+       return 0;
+}
+
 static void set_config(struct uci_section *s)
 {
        struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
@@ -338,16 +368,15 @@ static void free_lease(struct lease *l)
        free(l);
 }
 
-static int set_lease(struct uci_section *s)
+
+int set_lease_from_blobmsg(struct blob_attr *ba)
 {
        struct blob_attr *tb[LEASE_ATTR_MAX], *c;
        struct lease *l;
        size_t duidlen = 0;
        uint8_t *duid;
 
-       blob_buf_init(&b, 0);
-       uci_to_blob(&b, s, &lease_attr_list);
-       blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
+       blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(ba), blob_len(ba));
 
        if ((c = tb[LEASE_ATTR_DUID]))
                duidlen = (blobmsg_data_len(c) - 1) / 2;
@@ -384,7 +413,7 @@ static int set_lease(struct uci_section *s)
 
        if ((c = tb[LEASE_ATTR_HOSTID])) {
                errno = 0;
-               l->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
+               l->hostid = strtoull(blobmsg_get_string(c), NULL, 16);
                if (errno)
                        goto err;
        } else {
@@ -411,11 +440,89 @@ err:
        return -1;
 }
 
+static int set_lease_from_uci(struct uci_section *s)
+{
+       blob_buf_init(&b, 0);
+       uci_to_blob(&b, s, &lease_attr_list);
+
+       return set_lease_from_blobmsg(b.head);
+}
+
+/* Parse NTP Options for DHCPv6 Address */
+static int parse_ntp_options(uint16_t *dhcpv6_ntp_len, struct in6_addr addr6, uint8_t **dhcpv6_ntp)
+{
+       uint16_t sub_opt = 0, sub_len = htons(IPV6_ADDR_LEN);
+       uint16_t ntp_len = IPV6_ADDR_LEN + 4;
+       uint8_t *ntp = *dhcpv6_ntp;
+       size_t pos = *dhcpv6_ntp_len;
+
+       ntp = realloc(ntp, pos + ntp_len);
+       if (!ntp)
+               return -1;
+
+       *dhcpv6_ntp = ntp;
+
+       if (IN6_IS_ADDR_MULTICAST(&addr6))
+               sub_opt = htons(NTP_SUBOPTION_MC_ADDR);
+       else
+               sub_opt = htons(NTP_SUBOPTION_SRV_ADDR);
+
+       memcpy(ntp + pos, &sub_opt, sizeof(sub_opt));
+       pos += sizeof(sub_opt);
+       memcpy(ntp + pos, &sub_len, sizeof(sub_len));
+       pos += sizeof(sub_len);
+       memcpy(ntp + pos, &addr6, IPV6_ADDR_LEN);
+
+       *dhcpv6_ntp_len += ntp_len;
+
+       return 0;
+}
+
+/* Parse NTP Options for FQDN */
+static int parse_ntp_fqdn(uint16_t *dhcpv6_ntp_len, char *fqdn, uint8_t **dhcpv6_ntp)
+{
+       size_t fqdn_len = strlen(fqdn);
+       uint16_t sub_opt = 0, sub_len = 0, ntp_len = 0;
+       uint8_t *ntp = *dhcpv6_ntp;
+       size_t pos = *dhcpv6_ntp_len;
+       uint8_t buf[256] = {0};
+
+       if (fqdn_len > 0 && fqdn[fqdn_len - 1] == '.')
+               fqdn[fqdn_len - 1] = 0;
+
+       int len = dn_comp(fqdn, buf, sizeof(buf), NULL, NULL);
+       if (len <= 0)
+               return -1;
+
+       ntp_len = len + 4;
+
+       ntp = realloc(ntp, pos + ntp_len);
+       if (!ntp)
+               return -1;
+
+       *dhcpv6_ntp = ntp;
+
+       sub_opt = htons(NTP_SUBOPTION_SRV_FQDN);
+       sub_len = htons(len);
+
+       memcpy(ntp + pos, &sub_opt, sizeof(sub_opt));
+       pos += sizeof(sub_opt);
+       memcpy(ntp + pos, &sub_len, sizeof(sub_len));
+       pos += sizeof(sub_len);
+       memcpy(ntp + pos, buf, len);
+
+       *dhcpv6_ntp_len += ntp_len;
+
+       return 0;
+}
+
 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
 {
        struct interface *iface;
        struct blob_attr *tb[IFACE_ATTR_MAX], *c;
        bool get_addrs = false;
+       int mode;
+       const char *ifname = NULL;
 
        blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
 
@@ -440,13 +547,16 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                iface->ndp_event.uloop.fd = -1;
                iface->ndp_ping_fd = -1;
                iface->dhcpv4_event.uloop.fd = -1;
+               INIT_LIST_HEAD(&iface->ia_assignments);
+               INIT_LIST_HEAD(&iface->dhcpv4_assignments);
+               INIT_LIST_HEAD(&iface->dhcpv4_fr_ips);
+
                set_interface_defaults(iface);
 
                avl_insert(&interfaces, &iface->avl);
                get_addrs = overwrite = true;
        }
 
-       const char *ifname = NULL;
        if (overwrite) {
                if ((c = tb[IFACE_ATTR_IFNAME]))
                        ifname = blobmsg_get_string(c);
@@ -492,15 +602,26 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
        if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
                iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
 
-       if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
-               iface->ignore = blobmsg_get_bool(c);
-
        if ((c = tb[IFACE_ATTR_LEASETIME])) {
                double time = parse_leasetime(c);
-               if (time < 0)
-                       goto err;
 
-               iface->dhcpv4_leasetime = time;
+               if (time >= 0)
+                       iface->dhcp_leasetime = time;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_LEASETIME].name, iface->name);
+
+       }
+
+       if ((c = tb[IFACE_ATTR_PREFERRED_LIFETIME])) {
+               double time = parse_leasetime(c);
+
+               if (time >= 0)
+                       iface->preferred_lifetime = time;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_PREFERRED_LIFETIME].name, iface->name);
+
        }
 
        if ((c = tb[IFACE_ATTR_START])) {
@@ -537,35 +658,50 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                }
        }
 
-       int mode;
        if ((c = tb[IFACE_ATTR_RA])) {
-               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
+               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
                        iface->ra = mode;
-               else
-                       goto err;
+
+                       if (iface->ra != MODE_DISABLED)
+                               iface->ignore = false;
+               } else
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_DHCPV4])) {
                if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
-                       if (config.main_dhcpv4)
+                       if (config.main_dhcpv4) {
                                iface->dhcpv4 = mode;
-               }
-               else
-                       goto err;
+
+                               if (iface->dhcpv4 != MODE_DISABLED)
+                                       iface->ignore = false;
+                       }
+               } else
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface %s",
+                              iface_attrs[IFACE_ATTR_DHCPV4].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_DHCPV6])) {
-               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
+               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
                        iface->dhcpv6 = mode;
-               else
-                       goto err;
+
+                       if (iface->dhcpv6 != MODE_DISABLED)
+                               iface->ignore = false;
+               } else
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_DHCPV6].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_NDP])) {
-               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
+               if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
                        iface->ndp = mode;
-               else
-                       goto err;
+
+                       if (iface->ndp != MODE_DISABLED)
+                               iface->ignore = false;
+               } else
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_NDP].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_ROUTER])) {
@@ -573,10 +709,11 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                unsigned rem;
 
                blobmsg_for_each_attr(cur, c, rem) {
+                       struct in_addr addr4;
+
                        if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
                                continue;
 
-                       struct in_addr addr4;
                        if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
                                iface->dhcpv4_router = realloc(iface->dhcpv4_router,
                                                (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
@@ -585,7 +722,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
                        } else
-                               goto err;
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_ROUTER].name, iface->name);
                }
        }
 
@@ -595,14 +733,19 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                iface->always_rewrite_dns = true;
                blobmsg_for_each_attr(cur, c, rem) {
+                       struct in_addr addr4;
+                       struct in6_addr addr6;
+
                        if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
                                continue;
 
-                       struct in_addr addr4;
-                       struct in6_addr addr6;
                        if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
-                               if (addr4.s_addr == INADDR_ANY)
-                                       goto err;
+                               if (addr4.s_addr == INADDR_ANY) {
+                                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                              iface_attrs[IFACE_ATTR_DNS].name, iface->name);
+
+                                       continue;
+                               }
 
                                iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
                                                (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
@@ -611,8 +754,12 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
                        } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
-                               if (IN6_IS_ADDR_UNSPECIFIED(&addr6))
-                                       goto err;
+                               if (IN6_IS_ADDR_UNSPECIFIED(&addr6)) {
+                                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                              iface_attrs[IFACE_ATTR_DNS].name, iface->name);
+
+                                       continue;
+                               }
 
                                iface->dns = realloc(iface->dns,
                                                (++iface->dns_cnt) * sizeof(*iface->dns));
@@ -621,27 +768,40 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dns[iface->dns_cnt - 1] = addr6;
                        } else
-                               goto err;
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_DNS].name, iface->name);
                }
        }
 
+       if ((c = tb[IFACE_ATTR_DNS_SERVICE]))
+               iface->dns_service = blobmsg_get_bool(c);
+
        if ((c = tb[IFACE_ATTR_DOMAIN])) {
                struct blob_attr *cur;
                unsigned rem;
 
                blobmsg_for_each_attr(cur, c, rem) {
-                       if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
-                               continue;
-
                        uint8_t buf[256];
                        char *domain = blobmsg_get_string(cur);
                        size_t domainlen = strlen(domain);
+                       int len;
+
+                       if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
+                               continue;
+
+                       domain = blobmsg_get_string(cur);
+                       domainlen = strlen(domain);
+
                        if (domainlen > 0 && domain[domainlen - 1] == '.')
                                domain[domainlen - 1] = 0;
 
-                       int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
-                       if (len <= 0)
-                               goto err;
+                       len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
+                       if (len <= 0) {
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_DOMAIN].name, iface->name);
+
+                               continue;
+                       }
 
                        iface->search = realloc(iface->search, iface->search_len + len);
                        if (!iface->search)
@@ -675,44 +835,91 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
        if ((c = tb[IFACE_ATTR_DHCPV6_NA]))
                iface->dhcpv6_na = blobmsg_get_bool(c);
 
+       if ((c = tb[IFACE_ATTR_DHCPV6_HOSTID_LEN])) {
+               uint32_t hostid_len = blobmsg_get_u32(c);
+
+               if (hostid_len >= HOSTID_LEN_MIN && hostid_len <= HOSTID_LEN_MAX)
+                       iface->dhcpv6_hostid_len = hostid_len;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                               iface_attrs[IFACE_ATTR_DHCPV6_HOSTID_LEN].name, iface->name);
+
+       }
+
        if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
                iface->default_router = blobmsg_get_u32(c);
 
-       if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
-               iface->ra_managed = blobmsg_get_u32(c);
+       if (!tb[IFACE_ATTR_RA_FLAGS] && !tb[IFACE_ATTR_RA_SLAAC] &&
+           (c = tb[IFACE_ATTR_RA_MANAGEMENT])) {
+               switch (blobmsg_get_u32(c)) {
+               case 0:
+                       iface->ra_flags = ND_RA_FLAG_OTHER;
+                       iface->ra_slaac = true;
+                       break;
+               case 1:
+                       iface->ra_flags = ND_RA_FLAG_OTHER|ND_RA_FLAG_MANAGED;
+                       iface->ra_slaac = true;
+                       break;
+               case 2:
+                       iface->ra_flags = ND_RA_FLAG_OTHER|ND_RA_FLAG_MANAGED;
+                       iface->ra_slaac = false;
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       if ((c = tb[IFACE_ATTR_RA_FLAGS])) {
+               iface->ra_flags = 0;
+
+               if (parse_ra_flags(&iface->ra_flags, c) < 0)
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_FLAGS].name, iface->name);
+       }
 
        if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
                uint32_t ra_reachabletime = blobmsg_get_u32(c);
-               if (ra_reachabletime > 3600000)
-                       goto err;
 
-               iface->ra_reachabletime = ra_reachabletime;
+               if (ra_reachabletime <= 3600000)
+                       iface->ra_reachabletime = ra_reachabletime;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_REACHABLETIME].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
                uint32_t ra_retranstime = blobmsg_get_u32(c);
-               if (ra_retranstime > 60000)
-                       goto err;
 
-               iface->ra_retranstime = ra_retranstime;
+               if (ra_retranstime <= 60000)
+                       iface->ra_retranstime = ra_retranstime;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_RETRANSTIME].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
                uint32_t ra_hoplimit = blobmsg_get_u32(c);
-               if (ra_hoplimit > 255)
-                       goto err;
 
-               iface->ra_hoplimit = ra_hoplimit;
+               if (ra_hoplimit <= 255)
+                       iface->ra_hoplimit = ra_hoplimit;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_HOPLIMIT].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_RA_MTU])) {
                uint32_t ra_mtu = blobmsg_get_u32(c);
-               if (ra_mtu < 1280 || ra_mtu > 65535)
-                       goto err;
 
-               iface->ra_mtu = ra_mtu;
+               if (ra_mtu >= 1280 || ra_mtu <= 65535)
+                       iface->ra_mtu = ra_mtu;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_MTU].name, iface->name);
        }
 
+       if ((c = tb[IFACE_ATTR_RA_SLAAC]))
+               iface->ra_slaac = blobmsg_get_bool(c);
+
        if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
                iface->ra_not_onlink = blobmsg_get_bool(c);
 
@@ -744,7 +951,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
                        iface->route_preference = 0;
                else
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_PREFERENCE].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_PD_MANAGER]))
@@ -753,7 +961,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
        if ((c = tb[IFACE_ATTR_PD_CER]) &&
                        inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
-               goto err;
+               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                      iface_attrs[IFACE_ATTR_PD_CER].name, iface->name);
 
        if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
                iface->learn_routes = blobmsg_get_bool(c);
@@ -779,6 +988,48 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                        free(astr);
        }
 
+       if (overwrite && (c = tb[IFACE_ATTR_NTP])) {
+               struct blob_attr *cur;
+               unsigned rem;
+
+               blobmsg_for_each_attr(cur, c, rem) {
+                       if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
+                               continue;
+
+                       char *str = blobmsg_get_string(cur);
+                       struct in_addr addr4;
+                       struct in6_addr addr6;
+
+                       if (inet_pton(AF_INET, str, &addr4) == 1) {
+                               if (addr4.s_addr == INADDR_ANY)
+                                       goto err;
+
+                               iface->dhcpv4_ntp = realloc(iface->dhcpv4_ntp,
+                                               (++iface->dhcpv4_ntp_cnt) * sizeof(*iface->dhcpv4_ntp));
+                               if (!iface->dhcpv4_ntp)
+                                       goto err;
+
+                               iface->dhcpv4_ntp[iface->dhcpv4_ntp_cnt - 1] = addr4;
+                       } else if (inet_pton(AF_INET6, str, &addr6) == 1) {
+                               if (IN6_IS_ADDR_UNSPECIFIED(&addr6))
+                                       goto err;
+
+                               iface->dhcpv6_sntp = realloc(iface->dhcpv6_sntp,
+                                               (++iface->dhcpv6_sntp_cnt) * sizeof(*iface->dhcpv6_sntp));
+                               if (!iface->dhcpv6_sntp)
+                                       goto err;
+
+                               iface->dhcpv6_sntp[iface->dhcpv6_sntp_cnt - 1] = addr6;
+
+                               if (!parse_ntp_options(&iface->dhcpv6_ntp_len, addr6, &iface->dhcpv6_ntp))
+                                       iface->dhcpv6_ntp_cnt++;
+                       } else {
+                               if (!parse_ntp_fqdn(&iface->dhcpv6_ntp_len, str, &iface->dhcpv6_ntp))
+                                       iface->dhcpv6_ntp_cnt++;
+                       }
+               }
+       }
+
        return 0;
 
 err:
@@ -877,9 +1128,9 @@ static void lease_change_config(struct lease *l_old, struct lease *l_new)
 
 static void lease_delete(struct lease *l)
 {
-       struct dhcp_assignment *a;
+       struct dhcp_assignment *a, *tmp;
 
-       list_for_each_entry(a, &l->assignments, lease_list)
+       list_for_each_entry_safe(a, tmp, &l->assignments, lease_list)
                free_assignment(a);
 
        free_lease(l);
@@ -922,7 +1173,7 @@ struct lease *config_find_lease_by_mac(const uint8_t *mac)
        return NULL;
 }
 
-struct lease *config_find_lease_by_hostid(const uint32_t hostid)
+struct lease *config_find_lease_by_hostid(const uint64_t hostid)
 {
        struct lease *l;
 
@@ -961,19 +1212,27 @@ void odhcpd_reload(void)
        struct uci_package *dhcp = NULL;
        if (!uci_load(uci, "dhcp", &dhcp)) {
                struct uci_element *e;
+
+               /* 1. Global settings */
                uci_foreach_element(&dhcp->sections, e) {
                        struct uci_section *s = uci_to_section(e);
-                       if (!strcmp(s->type, "host"))
-                               set_lease(s);
-                       else if (!strcmp(s->type, "odhcpd"))
+                       if (!strcmp(s->type, "odhcpd"))
                                set_config(s);
                }
 
+               /* 2. DHCP pools */
                uci_foreach_element(&dhcp->sections, e) {
                        struct uci_section *s = uci_to_section(e);
                        if (!strcmp(s->type, "dhcp"))
                                set_interface(s);
                }
+
+               /* 3. Static leases */
+               uci_foreach_element(&dhcp->sections, e) {
+                       struct uci_section* s = uci_to_section(e);
+                       if (!strcmp(s->type, "host"))
+                               set_lease_from_uci(s);
+               }
        }
 
        if (config.dhcp_statefile) {
@@ -1055,11 +1314,11 @@ void odhcpd_reload(void)
                                i->ndp = (master && master->ndp == MODE_RELAY) ?
                                                MODE_RELAY : MODE_DISABLED;
 
-                       router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
-                       dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
-                       ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
+                       router_setup_interface(i, i->ra != MODE_DISABLED);
+                       dhcpv6_setup_interface(i, i->dhcpv6 != MODE_DISABLED);
+                       ndp_setup_interface(i, i->ndp != MODE_DISABLED);
 #ifdef DHCPV4_SUPPORT
-                       dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
+                       dhcpv4_setup_interface(i, i->dhcpv4 != MODE_DISABLED);
 #endif
                } else
                        close_interface(i);