Hi, On Tue, Jan 23, 2024 at 11:14:27AM +0100, Jacek Tomasiak wrote: > Without these, commands like `iptables -n -L CHAIN` sometimes print > "Incompatible with this kernel" instead of "No chain/target/match > by that name". Thanks for the fix! I see errno value is tainted by unrelated code-paths if not explicitly set, but I failed to find a working reproducer. Do you have one at hand? Would be good to add a test and maybe add a Fixes: tag unless this is a day-1 bug. Cheers, Phil