void nl_sock_destroy(struct nl_sock *);
int nl_sock_join_mcgroup(struct nl_sock *, unsigned int multicast_group);
int nl_sock_leave_mcgroup(struct nl_sock *, unsigned int multicast_group);
int nl_sock_send(struct nl_sock *, const struct ofpbuf *, bool wait);
void nl_sock_destroy(struct nl_sock *);
int nl_sock_join_mcgroup(struct nl_sock *, unsigned int multicast_group);
int nl_sock_leave_mcgroup(struct nl_sock *, unsigned int multicast_group);
int nl_sock_send(struct nl_sock *, const struct ofpbuf *, bool wait);