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Re: Weird delay in ssh login

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On Mon, Feb 21, 2022 at 07:18:36PM -0500, Stefan Monnier wrote:
> Hi,
> 
> I have a VM here which gives me weird delays when I log into it (which
> I can only do via SSH) since I upgraded it to Bullseye.
> 
> The connection looks like:
> 
>     % ssh -v ...
>     [...]
>     debug1: control_persist_detach: backgrounding master process
>     debug1: forking to background
>     debug1: Entering interactive session.
>     debug1: pledge: id
>     debug1: multiplexing control connection
>     debug1: channel 1: new [mux-control]
>     debug1: channel 2: new [client-session]
>     [ !!! a bit more than 1m30s delay here !!! ]

This smells like your VM's ssh server is trying to reverse-resolve
the client's IP address to a name until the resolver times out.

Caveat: a quick shot off the hip, I might be extremely wrong...

Cheers
-- 
t

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Thread

Weird delay in ssh login Stefan Monnier <monnier@iro.umontreal.ca> - 2022-02-22 01:20 +0100
  Re: Weird delay in ssh login <tomas@tuxteam.de> - 2022-02-22 05:40 +0100
    Re: Weird delay in ssh login Stefan Monnier <monnier@iro.umontreal.ca> - 2022-02-22 14:50 +0100
      Re: Weird delay in ssh login <tomas@tuxteam.de> - 2022-02-22 20:40 +0100

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