According to the Cisco TAC Software Advisor tool, IOS 12.2(15)T5 does support IPv6. What leads you to believe that it does not? What specific boot image are you running? The latest IOS boot image with Enterprise feature set in your software train is:
For more information on this and other IOS releases you can login to the TAC website with your CCO account at:
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...