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