PPPd
pppd is the PPP daemon used on many Unix-like systems to establish and manage Point-to-Point Protocol connections. It implements the PPP protocol, negotiates link parameters with the peer, handles optional authentication, and configures the local network stack for the PPP session, including IPv4 or IPv6 addresses and routes.
Typical usage includes dialing out to an ISP over a telephone line or creating a PPP link
Configuration is primarily done through text files. Global defaults reside in /etc/ppp/options, while per-connection settings are
During connection, LCP negotiates options, and IPCP configures IPv4 (and IPv6CP for IPv6). The daemon creates
pppd is commonly integrated with network management tools and is used in both legacy dial-up environments and