tunneldigger-broker: connection fails with `Error: Invalid handle.`

[wlanslovenija]

tunneldigger-broker: connection fails with `Error: Invalid handle.`

[RalfJung]

I think Invalid Handle is a red herring... I am also seeing this in my logs despite everything working. As far as I recall, the error originates here

tunneldigger/broker/src/tunneldigger_broker/traffic_control.py

Line 23 in 4f72b30

if os.system('tc %s' % (command)) != 0 and not ignore_fails:

and is output by the tc program, not the Python code. When setting a bandwidth limit, the code first removes potentially existing previous bandwidth limits; if no such limit existed, we get an "Invalid handle" error.

[PolynomialDivision]

@RalfJung Thanks a lot! I thought I did something wrong because the tunnels don't come up automatically. Is that wanted behavior that you need to set them up with for example ip link afterwards?

[RalfJung]

ip link is usually done by one of the scripts, see https://github.com/wlanslovenija/tunneldigger/tree/master/broker/scripts for examples.

The config for our own servers is here; session-up is doing the setup and can be found here. Crucially we first add them to the bridge and then up the link, to make sure no traffic can go to the wrong place before the link is in the bridge.