Comment 14 for bug 1748408

Reading the thread further, we seem to need two patches, see https://www.spinics.net/lists/netdev/msg462051.html, so I'm going to add bc6d6fd2f916a0794ae4c44b28e14e2d172e05e0 into the build, too.
Will try that on top of b32038eb34ee42fd8056f99f88652270f6667996 (tag: Ubuntu-4.13.0-32.35).

I also tested the "ethtool --set-priv-flags <intf> flow-director-atr off" option and it seems to slow down the leak similar to >= 4.14 kernels. So either that fixes only part of the issue or we have a different one that only got masked up to now.

Third option would be using the upstream i40e driver instead, testing with 2.3.4 currently and that also seems to resolve the issue.