Still there in 14.04.

Please be advised, this bug breaks the SSH ControlMaster feature, which
in turn breaks Android builds.

I am trying to use LXC containers (snapshot clones using overlayfs) to
build Android (12.04 container on a 14.04 host).  Android's build
utility "repo" is a python script that uses SSH with an SSH
ControlMaster (shared SSH session using a FIFO socket).  It creates a
master connection like this:

  ssh -M -N -p 29422 -o ControlPath=/tmp/ssh-ujjH6W/master-%r@%h:%p my-
upstream-android.mirror.com

...and then it reuses that connection to do a git pull (from gerrit) for
100+ git repos (called "projects" in Android lingo).

Since pipes don't work, running "./repo sync" results in a bunch of
errors like this:

Control socket 
connect(/tmp/ssh-ujjH6W/[email protected]):
 Connection refused
Control socket 
connect(/tmp/ssh-ujjH6W/[email protected]):
 Connection refused
Control socket 
connect(/tmp/ssh-ujjH6W/[email protected]):
 Connection refused
...etc...

This error message was hard to diagnose and find.  I had to know to look
for "LXC Unix Sockets", specifically leaving out the terms Android,
repo, ssh, etc. Even then it was the fifth Google result down.

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https://bugs.launchpad.net/bugs/1214500

Title:
  consistent failure with overlayfs and unix sockets

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