IFF_LOOPBACK
device->flags = IFF_LOOPBACK | IFF_LINK;
if ((flags & IFF_LOOPBACK) == 0
if ((interface.Flags() & IFF_LOOPBACK) == 0) {
if ((flags & IFF_LOOPBACK) == 0
if ((flags & IFF_LOOPBACK) == 0
{IFF_LOOPBACK, "loopback"},
addFlags |= IFF_LOOPBACK;
if ((flags & IFF_LOOPBACK) == 0 && (flags & (IFF_UP | IFF_LINK)) == (IFF_UP | IFF_LINK)) {
if ((interface.Flags() & IFF_LOOPBACK) != 0)
if ((flags & (IFF_LOOPBACK | IFF_CONFIGURING | IFF_UP | IFF_LINK))
if ((interface.Flags() & IFF_LOOPBACK) != 0)
&& !(ifa->ifa_flags & IFF_LOOPBACK)) {