If I try to ping the other end of the tunnel for example, the forward packet are getting out, but the return packets are somehow blocked ... They seem to match the cm_v6tunnels ACL in the return direction but never get to the 'ipv6 stage' (a debug ipv6 packet never shows them).
And the curious part is that if I disable IPv6 CEF ( no ipv6 cef globally ), then traffic starts flowing, both from/to the router itself (trying to ping various stuff) and from/to the hosts on the lan that are on the subnet router through that link.
If I remove the two zone-pairs, then it works as well.
So what is going on ???
Running without self fw on the wan and running without CEF both don't seem like solutions ...
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...