strange paramiko end-of-session behaviour

[Robert Collins]

testing knit based sftp push I had an extremely long session and I
thought bzr had hung... then I quit out of an entirely different ssh
session and bzr finished...

 ../../versioned-file-performance/bzr push
Using saved location:
sftp://people.ubuntu.com/home/robertc/public_html/baz2.0/integration.asknit
bzr: WARNING: Unable to update the working tree of:
sftp://people.ubuntu.com/home/robertc/public_html/baz2.0/integration.asknit/
                                                                               
Connection to people.ubuntu.com closed by remote host.
Exception exceptions.OSError: <exceptions.OSError instance at
0x76dc7e0c> in <bound method SFTPFile.__del__ of <paramiko.SFTPFile
object at 0x7679b06c>> ignored
bzr: ERROR: exceptions.OSError: [Errno 32] Broken pipe

at /home/robertc/source/baz/versioned-file-performance/bzrlib/transport/sftp.py line 141
  in send
bzr: WARNING: SFTPLock 'lock' not explicitly unlocked
Exception exceptions.OSError: <exceptions.OSError instance at
0x777cc82c> in <bound method SFTPLock.__del__ of
<bzrlib.transport.sftp.SFTPLock object at 0x77673324>> ignored


Now, the interesting thing here to me is my ssh setup:
Access to people.u.c is via a bastion host, so I have a ProxyPass line
in .ssh/config. The other session I dropped was also connected via the
same ssh bastion host.
For speed I use ssh's multiplexing facilities with an AutoMaster config.

I am suspecting an interaction here ....


Rob

-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
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