Topic: No Gratuitous ARP Message on Reboot or IP Change?
I did notice that OpenWRT 15.05.1 does not send a Gratuitous ARP Message out when its IP address gets changed nor on a reboot, nor on a change of the Ethernet link state.
I have a device on my network which has an ARP cache table timeout of 20 minutes and it does not recognize that an IP address moves from one device to another within the 20 minutes what is way too long for my application.
When I start the command "arping -A -I br-lan 192.168.100.253 -c 1" the Gratuitous ARP Message gets send out and all devices on the network are aware that the IP address is now available on another MAC address as before.
Is that a failure on the OpenWRT system that it does not send out the Gratuitous ARP Message automatically, or is that an option which I can enable somehow?