openconnect client dtls handshake fail On Windows

[Guang]

Hi,

>And do you want ocserv to listen to all of these IPs? If not you can
>simply make it listen to the desired IP.

  Yes,I do want ocserv to listen to all IPs. I need that.

>It's quite possible, but cumbersome as I see, it requires using
>recvmsg() instead of recvfrom in main.c, and possibly switching send()
>with sendmsg(). Patches are welcome.
  
  OK,I will try to modify ocserv for this . 

Best regards,
Guang