4 ms·

I don't know if this is a typo in the article, but I didn't know that RP filtering would influence how ARP is working. I think it would be better to solve the p

I don't know if this is a typo in the article, but I didn't know that RP filtering would influence how ARP is working. I think it would be better to solve the problem at the root by asking Linux to be more like other OS with: sysctl -qw net.ipv4.conf.all.arp_announce=2 sysctl -qw net.ipv4.conf.all.arp_ignore=1

r1ch 4y ago
There's also net.ipv4.conf.interface.arp_filter. I found it quite confusing to identify exactly which of all of these should be tweaked. I run arp_ignore=1 and arp_filter=1 on my router to avoid the behavior and it seems to work.
deleted 4y ago
[deleted]
TwoNineFive 4y ago
This is preventing ARP flux, which is a different issue https://lwn.net/Articles/45373/ https://lwn.net/Articles/45373/ https://serverfault.com/questions/834512/why-does-linux-answer-to-arp-on-incorrect-interfaces https://serverfault.com/questions/834512/why-does-linux-answ... https://access.redhat.com/solutions/31284 https://access.redhat.com/solutions/31284