config: set RFC defaults for preferred lifetime

[project/odhcpd.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index 7fe31a14fed039b1580d78e812e15a577fd1b602..62d4857720aba118dd1260f53bbc4b5f5c7ac53c 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -215,7 +215,7 @@ static void set_interface_defaults(struct interface *iface)
        iface->ndp = MODE_DISABLED;
        iface->learn_routes = 1;
        iface->dhcp_leasetime = 43200;
-       iface->preferred_lifetime = 43200;
+       iface->preferred_lifetime = 604800; /* rfc4861#section-6.2.1: AdvPreferredLifetime 7 days */
        iface->dhcpv4_start.s_addr = htonl(START_DEFAULT);
        iface->dhcpv4_end.s_addr = htonl(START_DEFAULT + LIMIT_DEFAULT - 1);
        iface->dhcpv6_assignall = true;