Code review comment for ~alfonsosanchezbeato/network-manager:add-wifi-ap-support

Thanks for the work, I'm not maintaining that snap/having real knowledge about it but since we want to consolidate the deb&snap packaging at some point I'm going to comment from that angle

Please don't add undocumented patches, set-ld-library-path-for-iptables.patch should have some header with a description on why the change is needed and references to upstream/downstream bugs as appropriate

It would be also good to describe if the patch would be acceptable for the deb and see if that's something can could be upstreamed in some way