On Sun, 2011-02-20 at 22:47 +0100, Johannes Michler wrote: > > unfortunately, I don't know too much on the details how tun/tap and > tun/tap on windows in special is working. I tried to ping my > openconnect-IP from another host, but there is no additional > log-activity on my openconnect-windows-client then :-( That's bloody odd. You ought to be getting *some* input from the other end. Two things to test: Firstly, when you send packets to another box on the network, do they arrive? You can test with 'tcpdump' on the remote box, perhaps? Secondly, disable DTLS for now to keep things simple, and leave the network idle so that keepalives and DPD kick in. Do *they* work and do you see the traffic from the other end then? I wonder if it's poll() on the network connection that's failing, and never indicating that you have data on the socket? -- dwmw2