Hey Clem,
Interesting problem, I haven’t experienced anything like this particular incident before but I’ll see what information I can find for you in regards to resolve this error. The libraries and forums that I’ve linked below should have some useful information in possibly troubleshooting the error in this situation.
https://www.pjrc.com/teensy/td_libs_Ethernet.html
All the best with your project!
Bryce
Core Electronics | Support
