SC_NOICMP         443 net/if_sl.c    	if (sc->sc_if.if_flags & SC_NOICMP && ip->ip_p == IPPROTO_ICMP) {
SC_NOICMP         778 net/if_strip.c 	if (sc->sc_if.if_flags & SC_NOICMP && ip->ip_p == IPPROTO_ICMP) {