6 IP layer

38.4223GPPNG-RANRelease 16TSXn signalling transport

The NG-RAN node shall support IPv6 (IETF RFC 8200 [4]) and/or IPv4 (IETF RFC 791 [5]).

The IP layer of Xn-C only supports point-to-point transmission for delivering XnAP message.

The NG-RAN node shall support the Diffserv Code Point marking as described in IETF RFC 2474 [6].