Thanks for your help, I have a question : with 5.1... version it's ok : it works : I have reverted to version 5.1.4-2-01 like you but it's broken with 5.2 version ? In 5.2 version the image docker change by using iptables or nftables ? The issue is here to my mind (and the IA mind) Maybe is it possible for Synology, QNAP, ... users to use in the next version the same version of iptables or nftables like in 5.1... version ? Thanks