V_regtree
if (mhp->msg->sadb_msg_satype >= sizeof(V_regtree)/sizeof(V_regtree[0]))
LIST_FOREACH(reg, &V_regtree[mhp->msg->sadb_msg_satype], chain) {
LIST_INSERT_HEAD(&V_regtree[mhp->msg->sadb_msg_satype], newreg, chain);
LIST_FOREACH(reg, &V_regtree[i], chain) {
LIST_INIT(&V_regtree[i]);
LIST_FOREACH(reg, &V_regtree[i], chain) {