Billion Electric Company BiPAC 8501/8521 - Manual (Page 66)

Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Chapter 4: Configuration
62
Discover Primary NBNS / Discover Secondary NBNS: This setting enables/disables whether
the primary/secondary NBNS server address is requested from a remote PPP peer using IPCP.
The default setting for this command is disabled.
Discover Subnet Mask: Specify if the subnet mask given by IPCP negotiation process is to be
used.
Give Subnet Mask To DHCP Server: Enable to change your DHCP Server settings by using
the given information in IPCP negotiation process.