Comment 0 for bug 1270237

[Impact]
When running a server for an extended amount of time the conntrack table can fill up.
Here is the netfilter discussion: http://www.spinics.net/lists/netfilter-devel/msg26759.html

[Fix]
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6547a221871f139cc56328a38105d47c14874cbe

[Test Case]
From the patch:
When loose tracking is enabled (default), non-syn packets cause
creation of new conntracks in established state with default timeout for
established state (5 days). This causes the table to fill up with UNREPLIED
when the 'new ack' packet happened to be the last-ack of a previous,
already timed-out connection.