rtinitflags
if (rtinitflags(ia) != 0) {
if (!(flags & RTF_HOST) && rtinitflags(ia) == 0 &&
if (rtinitflags(target) != 0) {
if (rtinitflags(ia) != 0) {
rtinit(&target->ia_ifa, RTM_DELETE, rtinitflags(target));
error = rtinit(&ia->ia_ifa, RTM_ADD, rtinitflags(ia) | RTF_UP);
rtinit(&target->ia_ifa, RTM_DELETE, rtinitflags(target));
rtinit(&ia->ia_ifa, RTM_DELETE, rtinitflags(ia));