** Description changed:

  I get the following error when running the discovery script on the
  command line.
  
  $ /usr/share/squid-deb-proxy-client/apt-avahi-discover
  error: uncaptured python exception, closing channel <AptAvahiClient> 
('10.1.2.3', 3142): 2147483647 (<class 'socket.error'>:[Errno 111] Connection 
refused [/usr/lib/python2.7/asyncore.py|read|83] 
[/usr/lib/python2.7/asyncore.py|handle_read_event|446] 
[/usr/lib/python2.7/asyncore.py|handle_connect_event|454])
  error: uncaptured python exception, closing channel <AptAvahiClient> 
('10.0.3.1', 3142): 2147483647 (<class 'socket.error'>:[Errno 111] Connection 
refused [/usr/lib/python2.7/asyncore.py|read|83] 
[/usr/lib/python2.7/asyncore.py|handle_read_event|446] 
[/usr/lib/python2.7/asyncore.py|handle_connect_event|454])
  error: uncaptured python exception, closing channel <AptAvahiClient> 
('172.24.74.129', 3142): 2147483647 (<class 'socket.error'>:[Errno 111] 
Connection refused [/usr/lib/python2.7/asyncore.py|read|83] 
[/usr/lib/python2.7/asyncore.py|handle_read_event|446] 
[/usr/lib/python2.7/asyncore.py|handle_connect_event|454])
  http://172.24.74.145:3142/
  
  The last line still returns the proper proxy URI so as far as I can tell
  things are still working.  The IP 10.1.2.3 is for an n2n VPN.  This is
  on trusty with version 0.8.6ubuntu1.
+ 
+ To trigger the bug the environment setup needs to be in a specific way.
+ It seems for the problem to occur it need more than one host/IP discovered 
via avahi. This can be probed via $ avahi-browse -kprtf _apt_proxy._tcp
+ and e.g. the common LXD setup of IPv4 + ipv6 is NOT enough to trigger it.
+ 
+ TODO: a sample output of the above command in an affected environment
+ could be helpful.
+ 
+ TODO: if possible outlining how the environment can be configured to
+ have this multi host/IP reply in avahi would be helpful as well.

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https://bugs.launchpad.net/bugs/1505670

Title:
  "uncaptured python exception"

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