Code works then when restarting, it picks IP 0.0.0.0

[jimmie11]

I have a Teensy 4.1 sketch which uses the NativeEternet library. I am using the latest versions of TeensyDuino and NativeEthernet.

My program gets a static IP and runs without ANY problems. The program uses the watchdog to restart every 48 hours. And often it restarts and everything works well.

1. Every once in a while, the Teensy cannot be reached on the net.

2. When this happens and the Teensy restarts, it picks a "0.0.0.0" IP

Normally, when the board is not connected to the network, the code blocks and it never gets a static IP. So I do not know how it returns with IP = 0.0.0.0 ?

3. Disconnecting power and reconnecting does NOT solve the problem.

4. Leaving the board disconnected for a minute or so somehow fixes the issue and everything goes back to working normally.

Is this a hardware or a software problem?

Thanks.