I'm having an issue with the Cisco VPN client connecting to an IOS router via an IPSec/TCP connection. The first and second connection attempts are always unsuccessful, and it always works like a charm on the third attempt. When clients try to connect I see a log message saying "ISAKMP:(0): MM Fragmentation supported", So I'm guessing it's related to MTU somehow.
If anyone has any ideas/links that might point me in the right direction, it would be greatly appreciated.
Thanks in advance,