ppp-dev 2.4.7-2+4.1ubuntu5.1 (riscv64 binary) in ubuntu focal

 The Point-to-Point Protocol provides a standard way to transmit
 datagrams over a serial link, as well as a standard way for the machines
 at either end of the link to negotiate various optional characteristics
 of the link.
 .
 This package provides files needed to build pppd-related software.