I have seen this before but never really bothered to look more into it. It has always showed for wired but not wireless. I did some digging and it appears that the "framed-ip-address" is being sent/honored by the NAS in the "access-accept" packet.
Why is it not showing in ISE's screen is now another quesiton. I would say a bug but I recall this since the 1.0 days and I have done several deployments. Perhaps Cisco can chime in here or if you can open a TAC case and report back your findings :)
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...