Comment 3 for bug 1669578

stgraber@dakara:~$ lxc exec zesty bash
root@zesty:~# tmux
lost server
root@zesty:~# tty
not a tty
root@zesty:~# echo $?
0
root@zesty:~# dpkg -i *.deb
(Reading database ... 26464 files and directories currently installed.)
Preparing to unpack libc-bin_2.24-7ubuntu3_amd64.deb ...
Unpacking libc-bin (2.24-7ubuntu3) over (2.24-7ubuntu2) ...
Preparing to unpack libc6_2.24-7ubuntu3_amd64.deb ...
Unpacking libc6:amd64 (2.24-7ubuntu3) over (2.24-7ubuntu2) ...
Setting up libc6:amd64 (2.24-7ubuntu3) ...
Setting up libc-bin (2.24-7ubuntu3) ...
Processing triggers for man-db (2.7.6.1-1) ...
root@zesty:~# tty
/proc/self/fd/0
root@zesty:~# echo $?
0
root@zesty:~# tmux
[exited]
root@zesty:~#