script distributed with [app-emulation/lxc][lxc], which pointed out
the need for `CONFIG_CGROUP_MEM_RES_CTLR` (renamed to `CONFIG_MEMCG`
in [c255a45 (memcg: rename config variables, 2012-07-31)][c255a45],
-released in Linux v3.6) and `CONFIG_VLAN_8021Q`. On top of those,
-`app-emulation/docker` recommended `CONFIG_BRIDGE`,
+released in Linux v3.6, `lx-checkconfig` was updated in [c93c7b1, Fix
+checkconfig to handle kernel memory cgroup name change,
+2012-11-14][c93c7b1], released in LXC v0.9.0) and `CONFIG_VLAN_8021Q`.
+On top of those, `app-emulation/docker` recommended `CONFIG_BRIDGE`,
`CONFIG_NETFILTER_XT_MATCH_ADDRTYPE`, `CONFIG_NF_NAT`,
`CONFIG_NF_NAT_NEEDED`, `CONFIG_IP_NF_TARGET_MASQUERADE` (since
[045eb9f (another necessary kernel flag, 2013-12-09)][045eb9f], in a
[overlay]: https://github.com/tianon/docker-overlay/
[lxc]: http://lxc.sourceforge.net/
[c255a45]: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c255a458055e459f65eb7b7f51dc5dbdd0caf1d8
+[c93c7b1]: https://github.com/lxc/lxc/commit/c93c7b1a0b0d4548780b9c22fb9ab907783caad1
[045eb9f]: https://github.com/tianon/docker-overlay/commit/045eb9f54bbfad07657ca1dafeb84d56c56fdbea
[866-wtk]: https://github.com/dotcloud/docker/issues/866#issuecomment-30190904
[archived]: https://index.docker.io/