Comment 3 for bug 1454008

No problem.

Here's the output:

root@core01:~# dpkg -l | grep lxcfs
ii lxcfs 0.7-0ubuntu4 amd64 FUSE based filesystem for LXC

root@core01:~# apt-cache show lxcfs
Package: lxcfs
Priority: optional
Section: admin
Installed-Size: 141
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Version: 0.7-0ubuntu4
Depends: cgmanager, libc6 (>= 2.17), libcgmanager0 (>= 0.33), libdbus-1-3 (>= 1.0.2), libfuse2 (>= 2.8.1), libnih-dbus1 (>= 1.0.0), libnih1 (>= 1.0.0), init-system-helpers (>= 1.18~), lsb-base (>= 4.1+Debian11ubuntu7)
Filename: pool/main/l/lxcfs/lxcfs_0.7-0ubuntu4_amd64.deb
Size: 22474
MD5sum: abae7cd57011adf7ed6e79cffba8d9e1
SHA1: 31f72340cda3d43ebab25b0df6efb9d9bace21c0
SHA256: 58985dd9738827bf8c6146e8606c529c605c94c521127660d551899b80b12478
Description-en: FUSE based filesystem for LXC
 LXCFS provides a FUSE based filesystem to improve the LXC experience
 within the containers.
 .
 This filesystem offers both a cgroupfs-like view for use by
 unprivileged containers which wouldn't otherwise be allowed to mount
 cgroupfs. And a set of files that are meant to be bind-mounted over
 their /proc equivalent to make them cgroup-aware.
Description-md5: f3cabfc6ca3d3433720d9d811af950bd
Homepage: https://linuxcontainers.org
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 9m

Which looks to be: https://launchpad.net/ubuntu/+source/lxcfs/0.7-0ubuntu4