pMTU discovery

[David Woodhouse]

On Fri, 2012-06-08 at 19:05 +0200, Bernhard Schmidt wrote:
> It basically works, but I think you are using the wrong MTU value. I'm 
> currently in an IPv4-only non-MTU-challenged location. Cisco Anyconnect 
> client connects with 1418 bytes MTU, openconnect with 1315. I'm not 
> exactly sure what the difference between X-DTLS-MTU and D-CSTP-MTU is 
> supposed to be, but the tunnel should be able to transport the larger value.
> 
> TCP_INFO rcv mss 1348, snd mss 1348, adv mss 1448, pmtu 1500 

Hm, so we should be sending X-CSTP-MTU: 1335, X-CSTP-Base-MTU: 1500.

What is the Cisco client sending? And can you see the debug output from
the server, like you sent in your first message?

-- 
dwmw2
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