> I found my server had two IPs, and the source IP of the "Server Hello" > is not the same as the destination IP of the "Client Hello". After > chaning the server IP, now the "DTLS handshake failed" problem with > OpenConnect-GUI is gone. I would argue that's a server bug. If we accept incoming DTLS on a given IP address the we should also bind() to that address before replying. > As for ACSMC, it still doesn't work after upgrading to v4.0. Cisco's client is... not the best piece of software I have ever encountered. There's a reason I wrote my own client. -- dwmw2