Using Ubuntu 20.10 now, with openconnect=8.10-1 and vpnc-scripts=0.1~git20200226-1 I dropped the --script parameter, and I did not see errors about misusing "ip route", and routing to hosts over the VPN seems to be okay.
$ openconnect --authgroup=$REDACTED --cert-expire-warning=5 --compression=none --no-deflate --disable-ipv6 --timestamp --user=$USER --dump-http-traffic --verbose https://webportal.${COMPANY}/+webvpn+/ $ ip r default via 192.168.1.1 dev eth0 proto dhcp metric 100 10.0.0.0/8 dev tun0 scope link 10.123.196.0/24 dev tun0 scope link xxx.xxx.186.23 dev tun0 scope link xxx.xxx.186.25 dev tun0 scope link -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871184 Title: openconnect throws errors and routing issues after connection. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vpnc-scripts/+bug/1871184/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs