ATF_PERM
arpreq.xarp_flags = ATF_PERM | ATF_PUBL;
ar.xarp_flags = ATF_PERM;
ar.xarp_flags &= ~ATF_PERM;
if ((ar.xarp_flags & (ATF_PERM|ATF_AUTHORITY)) == ATF_AUTHORITY) {
if (!(ar.xarp_flags & ATF_PERM))
if (arp_flags & ATF_PERM)
*flagsp |= ATF_PERM; /* not subject to aging */