https://app.knowbase.one/vault/rfc/docid/2921
RFC2637: Point-to-Point Tunneling Protocol (PPTP)
Network Working Group K. Hamzeh Request for Comments: 2637 Ascend Communications Category: Informational G. Pall Microsoft Corporation ...
https://app.knowbase.one/vault/rfc/docid/4347
RFC4045: Extensions to Support Efficient Carrying of Multicast Traffic in Layer-2 Tunneling Protocol (L2TP)
Network Working Group G. Bourdon Request for Comments: 4045 France Telecom Category: Experimental April 2005 Extensions to Support Efficient Carrying of Multicas...