Unable to remain connected to insecure server.

I have a VAC ban. I am running a Garry’s Mod server with -insecure enabled.

Console initialized.
ConVarRef mat_dxlevel doesn't point to an existing ConVar
Game.dll loaded for "Garry's Mod"
Initializing Steam libraries for INSECURE Internet server.  Authentication and VAC not requested.

After about 2 minutes on the server, the server kicks me for being VAC banned. The game tells me I’m banned from secure servers, but my server is insecure.

Disconnect: VAC banned from secure server
Disconnect: VAC banned from secure server

Has anyone else experienced this?

(User was banned for this post ("Help & Support" - Orkel))

Do sv_lan 1 on a local hosted server and check