https://app.knowbase.one/vault/rfc/docid/5403
RFC4951: Fail Over Extensions for Layer 2 Tunneling Protocol (L2TP) "failover"
Network Working Group V. Jain, Ed. Request for Comments: 4951 Riverstone Networks Category: Standards Track August 2007 Fail Over Extensions for Layer 2 Tunneling Protocol (L2TP) "failover" S...