+AvahiNetlink *avahi_netlink_new(const AvahiPoll *poll_api, uint32_t groups, AvahiNetlinkCallback callback, void* userdata);
+void avahi_netlink_free(AvahiNetlink *n);
+int avahi_netlink_send(AvahiNetlink *n, struct nlmsghdr *m, unsigned *ret_seq);
+int avahi_netlink_work(AvahiNetlink *n, int block);