tag	line	file	source code
ENOPROTOOPT	51	net/inet/icmp.c	{ ENOPROTOOPT,  1 },  /*  ICMP_PROT_UNREACH  */
ENOPROTOOPT	500	net/inet/sock.c	return(-ENOPROTOOPT);
ENOPROTOOPT	566	net/inet/sock.c	return(-ENOPROTOOPT);
ENOPROTOOPT	655	net/inet/sock.c	return(-ENOPROTOOPT);