roboRIO IP address assignment

[Crossle86]

I have observed that the roboRIO (RR) seems to remember its last assigned IP address around power off and back on. It seems reluctant to change its IP address when you change the dhcp assignment range in the router. It does change at times when you change the router starting address but other times seems to ignore the change and retain an earlier assignment.

This exploration came about because we had a case where mDNS just quit working and we were dead in the water. Looking at the deploy in Eclipse it falls back to the xx.xx.xx.2 fixed ip address if mDNS fails. So I thought it would be good to start the router dhcp at .2, so the RR would be assigned .2 and the fall back would work. But I was not able to get the RR to take an address below 20 (when it would take a new address from the router).

mDNS went back to working for no apparent reason and I'm spooked by this so getting the RR on .2 would seem to be good, unless there is a place in the eclipse plugin files where you can set the default IP used for deploy fall back.