int system_update_ipv6_mtu(struct device *dev, int mtu);
-int system_link_netns_move(const char *ifname, const pid_t target_ns);
+int system_link_netns_move(const char *ifname, const pid_t target_ns, const char *target_ifname);
int system_netns_open(const pid_t target_ns);
int system_netns_set(int netns_fd);