l2vpn_if_find
struct l2vpn_if *l2vpn_if_find(struct l2vpn *, unsigned int);
if ((xf = l2vpn_if_find(xl, lif->ifindex)) == NULL) {
if ((lif = l2vpn_if_find(l2vpn, xf->ifindex)) == NULL) {
lif = l2vpn_if_find(l2vpn, kif->ifindex);
if (l2vpn_if_find(l, kif->ifindex)) {
if (l2vpn_if_find(ltmp, kif->ifindex)) {