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https://issues.apache.org/jira/browse/SSHD-738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16218685#comment-16218685
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Hugo Arès commented on SSHD-738:
--------------------------------

We upgraded to 1.6.0 and issue is still happening:
[2017-10-25 15:56:13,935] [NioProcessor-5] WARN  
org.apache.sshd.server.session.ServerSessionImpl : 
exceptionCaught(ServerSessionImpl[user@/xxx.xxx.xxx.xxx:xxxx])[state=Opened] 
BufferException: Underflow: requested=4, available=0

I will try to get the information about the client.

> "BufferException: Underflow" warning is frequently reported
> -----------------------------------------------------------
>
>                 Key: SSHD-738
>                 URL: https://issues.apache.org/jira/browse/SSHD-738
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>         Environment: Gerrit Code Review
>            Reporter: David Ostrovsky
>              Labels: monitor
>
> Since upgrade to 1.2.0 Gerrit users report this warning being frequently 
> reported:
> {noformat}
> [2017-04-05 09:21:22,246] [sshd-SshServer[3b6c7bae]-nio2-thread-18] WARN  
> org.apache.sshd.server.session.ServerSessionImpl : 
> exceptionCaught(ServerSessionImpl[xxxx@/yyyyy:47277])[state=Opened] 
> BufferException: Underflow
> {noformat}
> It worth mention, that other SSHD users reported similar problem: 
> https://jira.atlassian.com/browse/BAM-17773.



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