Issue with T-mobile Home 5G and Cisco AnyConnect

Oups wrote:

Hola,

When I try to connect my vpn Cisco Anyconnect with my box Home 5G, I have this message:

"The VPN was terminated due to a loss of communication with the secure gateway. A new connection is necessary, which requires re-authentification."

I tried to Allow local (LAN) access when using VPN (if configured) but it did not work.

I have no idea what to do. I work for a big foreigner entity and it is very difficult to have answers.

You did the checkbox, so maybe changing the MTU might help.