I was also trying to get slip network driver running on nRF. I was using it to create secure TLS connection. It was in TAP mode. I disabled logs, so the driver was the only user of UART. Generally connection was really unstable. I don't know if it was fault of software on PC or board side. I give up after few tries of getting it working more stable. Are you also want to use secure TLS connection over SLIP?
