af2sock
if (af2sock(af, s, s6) == -1) {
if (setsourcefilter(af2sock(af, s, s6), ifindex,
if (af2sock(af, s, s6) == -1) {
if (getsourcefilter(af2sock(af, s, s6), ifindex,
if (af2sock(af, s, s6) == -1) {
if (getsourcefilter(af2sock(af, s, s6), ifindex, &su.sa,