On Fri Dec 19, 2025 at 3:41 PM UTC, nepomuk1 wrote: > Hi list, > > Playing with rdomains, I was a little bit surprised that a normal > user is able to change the rtable of one of their running processes, > as long as it is using the default rtable (0): > > user$ route -T1 exec ping <address in rtable1> > > I was pointed to getrtable(2) which indeed documents this behavior. > I wonder why rtable 0 is special in this regard, and if documenting > this behavior in rdomain(4) would be useful? > > Please CC' me in replies, I am not on the list, thanks.
Hi, man(2) getrtable seems to explain this. I imagine there could be a place for it in rdomain(4). One possible compounding factor is that ping is setuid, but I think it would work either way in this instance. Thank you for sharing! This is interesting either way. I haven't used rdomains yet. -Henrich
