Intresting thing happened this weekend. The nodes all appeared 'down' again and yet in all screens (resources and topology) the GW was showing as up. It was a mystery. Then, I tried to turn on some lights, it worked.
So this time MyController is not getting data from the nodes, but is able to send commands to the nodes correctly. I am beyond puzzled by this as it is no longer a GW faliure nor is it a NRF24l01 lock up.
I discovered that OpenHab was enabled at the same time even if I removed the gateway from its things (just wanted to give it a try), so I just unistalled it and the problem disappeared.
For a while...
I was using MYSController for real time debugging of my sensors, but without enablig the "RX only" mode.
Once enabled the RX only mode, the problem disappeared completely.
So, there's nothing wrong with MyController, but rather a weird scenario caused by me.
Enabling ACK on both sensors and Mycontroller I could figure out what was going on.
@Avamander could you please post me an example of DHCP renewal?
I investigated the ICMP ping idea but I've not been able to get something working, since the ping seems to interfere with GW code. Did you manage to use it in a mysensors GW?
@jkandasa No problem..... Mysteriously it seems to have resolved itself. Today is 'update' day for the pi and I thought I'd wake to a dead http connection. But no! - there was mycontroller running as normal. Maybe I just didn't give it enough time to settle down in previous tests......Ah well, it's alright at the moment so this is solved now!