Got like 2 dozen devices on a given network.
Recently I've changed a module on 2 devices, and this resulted swapping their IP addresses, which wouldn't matter in my case.
- device A has IP b of device B
- device B has IP a of device A
As a result only 1 of them is accessible. There are no problems with the IP addresses, those are different, and devices can be accessed separately.
Once one of them gets accessible, the other gets unaccessible, and again and again. This changes like in 20-60 seconds.
Can it be that the MAC addresses are stored somewhere, and the router is somehow unable to determine which device has which IP assuming the 2 are the same and this gets only resolved when they answser to the packets.
Tried ping and ssh. Results are the same.