just wondering if you are configuring the exact scenario as in the cisco doc.
i.e. the pix is the pppoe client and the router is the pppoe server; or
the pppoe server is actually the isp.
internet <--> 2611xm <--> pix <--> inside
assuming this is the scenario, then 2611xm needs to be re-configured in running bridging mode. personally i would terminate the dsl connection on the 2611xm and forward udp 500, and udp 4500 to the pix for vpn termination.
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...