Michal Kubecek <mkube...@suse.cz> wrote: > Oops, exactly this issue was already discussed almost a year ago: > > http://lkml.kernel.org/r/20170824104824.2c318a0...@unicorn.suse.cz > > But something more urgent came and I forgot to get back to it. :-(
I did not even remeber, thanks for the pointer. So I think best course of action is to update man page to clearly say this only works in postrouting and with udp, and is ONLY intended for working around old dhcp software. >From kernel, have checkentry emit a warning when this is used for protocols other than udp, and make this a no-op for everything else. Same for postrouting: warn from checkentry if the hook is something else, and have target function not do anything for !postrouting. Does that make sense? I can work on a patch later this week if needed.
