I upgraded my Thinkpad Carbon X1 to Ubuntu 15.10 when Linux kernel version 4 became reliable. I had to do this to get power management features working and get good battery life (> 6 hours). Since that upgrade, I have not been able to VPN connect to Disney’s servers from outside their network. Yesterday I finally got this working.

In short, it’s a bug in the vpn scripts that work with Openconnect on Ubuntu 15.10. They successfully connect, but they don’t set a default network route to the VPN network device. To do this, you need to enter a simple Linux route command after VPN connects. See here for details.

In short: after VPN connecting at the command line, look for this message on the console:
Connected tun0 as A.B.C.D, using SSL

Then enter this command:
sudo route add default gw A.B.C.D tun0

NOTE: this is fixed in Ubuntu 16 – no need to enter the route command anymore. It works right out of the box like it used to.

NOTE: after disconnecting VPN, it can leave the VPN DNS servers in the list. This slows down network since every DNS name won’t resolve until these IP addresses time out. To fix that and remove these VPN DNS servers from the list, run this script:

#!/usr/bin/env bash
sudo rm /run/resolvconf/interface/tun0
sudo resolvconf -u
cat /etc/resolv.conf