React on change of arp table entry
- Date: Mon, 30 Oct 2017 15:34:50 +0200
- From: George Shuklin <george.shuklin@xxxxxxxxx>
- Subject: React on change of arp table entry
It there any way to react on changes in arp table (except for constant
polling)? I want to reset all TCP connection with directly connected IP
which have changed MAC address. I google a lot but found none.
Why this is needed: we have corosync/pacemaker HA cluster which moves IP
address between servers. There are many 'sleeping' clients which waits
for data on open connections, and those connections are most of the time
idle. If IP has been moved, I want all clients to get RST ASAP upon
receiving grace ARP from the new host.
Do you know any way to react on mac change?