NOTE: The AnyConnect client allows access to IPv6 resources over a public IPv4 connection (Windows XP SP2, Windows Vista, Mac OSX, and Linux only). You must use the command-line interface to configure IPv6; ASDM does not support IPv6.
Just got the confirmation. Today ASA/AnyConnect only supports IPv4 for transportation. Within the tunnel there can be IPv6 packets. Forthcoming releases will support also IPv6 as transportation media. But don't know when.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...