@quixoticgeek ARP responding on wrong interface?
Tell us more
@kramse how did you guess.
Yep.
@quixoticgeek because it is one of the worst and most annoying crap in the Linux kernel
With the time outs and life times it also is hard to diagnose
Good news is you will never forget it
@kramse 25 years as a sysadmin and it's the first time I've had to dive into that bit of arp. Am actually pleased at the quality of documentation for it out there.