google path mtu?

Mikael Abrahamsson swmike at
Mon Jan 26 10:47:51 CET 2015

On Sat, 24 Jan 2015, Andras Toth wrote:

> Airport Express is setting the IPv6 Tunnel MTU to 1280 in all cases and
> it's not configurable, as far as I'm aware.

That is what I have discovered. So the tunnel termination point 
will send PTB=1480 when sent 1500 byte packets, and my airport extreme 
will send PTB=1280.

Mikael Abrahamsson    email: swmike at

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