I have a problem with Cisco AnyConnect on Ubuntu 20.04.
When I start docker container (with non host network driver) Cisco AnyConnect instantly reconnected.
After starting docker container, AnyConnect logging something like that:
acvpnagent[928]: The entire VPN connection is being reconfigured.
UPD: I started using openconnect and everything works like a charm.
I followed the advice here which basically is to use OpenConnect instead of Cisco's AnyConnect and the reconnections stopped immediately. I've been using OpenConnect with Pop_OS 22.04 for around one month without any issue