tag	line	file	source code
RTF_HOST	328	net/inet/icmp.c	ip_rt_add((RTF_DYNAMIC | RTF_MODIFIED | RTF_HOST | RTF_GATEWAY),
RTF_HOST	210	net/inet/route.c	if (flags & RTF_HOST)
RTF_HOST	428	net/inet/route.c	if (flags & RTF_HOST)