if_announcemsghdr  421 net/if.h       struct if_announcemsghdr {
if_announcemsghdr  543 net/rtsock.c   		len = sizeof(struct if_announcemsghdr);
if_announcemsghdr  783 net/rtsock.c   	struct if_announcemsghdr	*ifan;
if_announcemsghdr  793 net/rtsock.c   	ifan = mtod(m, struct if_announcemsghdr *);