Traefik 2.11.1 & 3.0.0-rc4 break websocket connections

[thielj]

EDIT: The issue is fixed in Traefik 2.11.2 and 3.0.0-rc5.

Note that the tcp.lingeringTimeout setting has actually been removed. More importantly, Traefik (at least v3) will fail to start if these are present! See migration guide.

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See traefik/traefik#10598

Fix: roll-back or wait for the update

Workaround: add this to your entrypoint in eg. traefikyml (static config):

    transport:
      respondingTimeouts:
        tcp:
          lingeringTimeout: 180

[thielj]

NOTE: Traefik 2.11.2 and 3.0.0-rc5 have actually removed the tcp.lingeringTimeout setting and more importantly, will fail to start if these are present

[CommanderStorm]

I am going to unpin this because as far as I read traefik/traefik#10598, this is fixed