ssh continually hangs on Ubuntu 16.04 - Ask Ubuntu


after typing few commands new install of ubuntu 16.04 hangs. come life after few seconds (30 or so) other times crashes.

i have on 14 servers running previous version of ubuntu lts new load 16.04 crashes continuously. using konsole client machine on local network.

i can login of previous release no problem.

any thoughts or known bug fixes ?

it intermittent hardware issue on new server. faulty cable? nic? machine ok running 14.04 ?

since able connect fine other machines, if problem not hardware, perhaps should have @ configuration of ssh daemon on the new 16.04 box, vim /etc/ssh/sshd_config

what have tried troubleshoot ?
can run sshd debugging options on 16.04 box: " ...debug mode provides lot of information connection , smaller amount server configuration. server's debugging level (-d) can raised once, twice (-dd) or thrice (-ddd). "

on terminal, can run ssh client -vvv option well.

ssh -p 22 -vvv <user>@<server>

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