title: hg pull over ssh has suddenly started giving no suitable response from remote hg
body: <p>My team has been using mercurial for a while. We use ssh to connect to a central remote repository. Haven't had any issues with pushing or pulling over ssh to remote repos... until today!</p>
  
  <p>Everyone else is on the LAN, i work remotely and connect to the LAN with vpn (cisco). No one else is having problems now, but suddenly, no matter what I try, I get "no suitable response from remote hg!"</p>
  
  <p>I am able to access everything else on the LAN, and I can even ssh (in a terminal) into the remote server holding the remote repositories. </p>
  
  <p>Here is the output using the debug command</p>
  
  <pre><code>sending hello command
  sending between command
  no suitable response from remote hg
  </code></pre>