main_imsg_send_net_socket
static void main_imsg_send_net_socket(int, enum socket_type);
main_imsg_send_net_socket(af, LDP_SOCKET_DISC);
main_imsg_send_net_socket(af, LDP_SOCKET_EDISC);
main_imsg_send_net_socket(af, LDP_SOCKET_SESSION);