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IP tunnel MTU

> I wish you luck in getting your host IP stacks to work properly without
> ICMP, especially as you deploy IPv6.

>From what I've heard, ICMPv6 is already being filtered, including
PTBs. I have also heard that IPv6 fragments are also being dropped
unconditionally along some paths. So, if neither ICMPv6 PTB nor
IPv6 fragmentation works then the tunnel endpoints have to take
matters into their own hands. That's where SEAL comes in.

Thanks - Fred
fred.l.templin at boeing.com

> - Jared