IFCAP_TOE4
if_setcapabilitiesbit(ifp, IFCAP_TOE4, 0);
if (mask & IFCAP_TOE4) {
int enable = (if_getcapenable(ifp) ^ mask) & IFCAP_TOE4;
if ((if_getcapenable(ifp) & IFCAP_TOE4) == 0)
#define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6)
setmask |= mask & (IFCAP_TOE4 | IFCAP_TOE6);
if (nam->sa_family == AF_INET && !(ifp->if_capenable & IFCAP_TOE4))
if ((family == AF_INET && !(ifp->if_capenable & IFCAP_TOE4)) ||