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Re: ssh hangs for 5 seconds for a particular machine




On 09/04/2015 3:11 AM, "Vincent Lefevre" <vincent@vinc17.net> wrote:
>
> When connecting by SSH to a particular machine, ssh hangs for
> 5 seconds. The client machine doesn't matter (except for the
> machine itself). For instance:
>
> xvii:~> ssh -vvv 2>>(ts -s "%.s") ypig
> [...]
> 0.278462 debug2: key: /home/vinc17/.ssh/id_rsa (0x7f943e415e90), explicit
> 0.278513 debug2: key: rsa w/o comment (0x7f943e418a60),
> 0.278553 debug2: key: rsa w/o comment (0x7f943e418620),
> 0.278591 debug2: key: /home/vinc17/.ssh/id_rsa-internal ((nil)), explicit
> 5.291295 debug1: Authentications that can continue: publickey,password
> [...]
>
> This is always reproducible and this problem had never occurred
> before today.
>
> Any idea?
>
Disable the dns resolution in the ssh server config for that machine

> --
> Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
>
>
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> Archive: [🔎] 20150408171107.GA22873@xvii.vinc17.org">https://lists.debian.org/[🔎] 20150408171107.GA22873@xvii.vinc17.org
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