https://app.knowbase.one/vault/rfc/docid/5060
RFC4638: Accommodating a Maximum Transit Unit/Maximum Receive Unit (MTU/MRU) Greater Than 1492 in the Point-to-Point Protocol over Ethernet (PPPoE)
Network Working Group P. Arberg Request for Comments: 4638 D. Kourkouzelis Category: Informational Redback Networks M. Duckett ...