Hi Greg, Please, cherry-pick this commit: commit 87e94dbc210a720a34be5c1174faee5c84be963e Author: Eric Leblond <eric@xxxxxxxxx> Date: Thu May 11 18:56:38 2017 +0200 netfilter: synproxy: fix conntrackd interaction [ For other stable maintainers: This patch applies from 3.16 onwards. ] Thanks!