michal

Completed in https://github.com/apache/nuttx/pull/17048: - arm/samv7/boards/samv71-xult/README.txt

Hi @ken-hutchinson, this seems like the default behavior to me: https://man7.org/linux/man-pages/man2/recv.2.html > If no messages are available at the socket, the receive calls wait for a message to arrive, unless...

Sounds like expected behavior of [`arp_out`](https://github.com/apache/nuttx/blob/b5f6620a4c85735b28bbfdf2a806f4f40ea4de95/net/arp/arp_out.c#L106-L133). This should happen only after reset (or when arp cache is dropped maybe). The incoming ICMP echo request is processed by the net stack...