|The Care and Feeding of ISDN4BSD|
|10.4.3 Using tcpdump||The Care and Feeding||11.1 Encapsulation Format|
11 Setting up an IP over raw HDLC Link (ipr)
This section deals with the ipr network interfaces which are - like the PPP interfaces - used to setup an IP link between two systems, just the encapsulation of the IP frames differs. And it is much easier and less problematic to setup.