RFC 1877 (rfc1877) - Page 3 of 6
PPP Internet Protocol Control Protocol Extensions for Name Server Addresses
Alternative Format: Original Text Document
RFC 1877 PPP IPCP Extensions December 1995 Primary-DNS-Address The four octet Primary-DNS-Address is the address of the primary DNS server to be used by the local peer. If all four octets are set to zero, it indicates an explicit request that the peer provide the address information in a Config-Nak packet. Default No address is provided. 1.2. Primary NBNS Server Address Description This Configuration Option defines a method for negotiating with the remote peer the address of the primary NBNS server to be used on the local end of the link. If local peer requests an invalid server address (which it will typically do intentionally) the remote peer specifies the address by NAKing this option, and returning the IP address of a valid NBNS server. By default, no primary NBNS address is provided. A summary of the Primary NBNS Address Configuration Option format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Primary-NBNS-Address +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Primary-NBNS-Address (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type 130 Length 6 Primary-NBNS-Address The four octet Primary-NBNS-Address is the address of the primary NBNS server to be used by the local peer. If all four octets are set to zero, it indicates an explicit request that the peer Cobb Informational
