AnyConnect Client for Linux Unusable, Cisco should be Embarrased

[DoubleD]

I know I'm the first to say this.  But the AnyConnect application is unusable on Linux full stop.

Things I've noticed using the latest version as of today.  I've since uninstalled this application.

My corporate overloads wish to utilize this application in order for it's intended purpose.  I however have found that the application itself is unusable, and therefore have deemed this application unacceptable in the corporate workspace, specifically on Linux clients.
For several years I have been connecting to our corporate network using OpenConnect by means of Network Manager.  No issues.

As of recently our company with over 5000 employees, who have an enterprise license agreement with Cisco, and which this issue has been brought up many times, want ALL of it's network users to leverage the Cisco AnyConnect Client.  So far so good?

The problems I've noticed day one.
1. Cannot print to a local printer while the application is running and connected to a VPN. again, non-issue before
2. Any invocation of $ docker run, $ docker compose, on the command line, and this application falls to pieces.  Rendering the VPN connection to be dropped, and or flapping.

That was enough for me, I threw this application in the trash and uninstalled.  Until Cisco gets their $h!t together, and decides to create an enterprise level application, this ain't happening.  Cisco as a whole should be embarrassed for releasing this.

I'm not using a weird distro either, Ubuntu 25.04
Anyone else having a similar experience?

[bigevilbeard]

It does not appear from your post you have drops which were reported/seen https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1783903/+activity others have suggested

sudo apt-get remove network-manager-config-connectivity-pop

So i think the stable connect of the Linux version is fixed in newer updates, or were you getting drop outs too?

From what i read, open connect uses standard linux routing without aggressive network takeover creating conflicts with any other network aware applications or services, this would explain your printing and docker issues, is my best guess. The anyconnect client appears to be a port rather than a native implementation, making fundamental networking fixes complex.

Openconnect remains the de facto solution for Linux users who need anyconnect compatible VPN connectivity.

Hope this helps.