On 08.06.2012 19:05, Bernhard Schmidt wrote: > On 08.06.2012 18:47, Bernhard Schmidt wrote: > >> PEBKAC, I was just being stupid. Compiled fine, will test right away. > > 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 > [...] > X-CSTP-MTU: 1315 > X-DTLS-MTU: 1418 > DTLS option X-DTLS-MTU : 1418 > > I'll try MTU challenged (DSL) and native IPv6 transport either tonight > or during the weekend. IPv6 with MTU 1492: TCP_INFO rcv mss 1368, snd mss 1368, adv mss 1428, pmtu 1500 X-CSTP-MTU: 1335 X-DTLS-MTU: 1386 IPv4 with MTU 1492: TCP_INFO rcv mss 1368, snd mss 1368, adv mss 1448, pmtu 1500 X-CSTP-MTU: 1335 X-DTLS-MTU: 1418 Can openconnect output the _sent_ HTTP headers somehow? Best Regards, Bernhard
