Plan 9 from Bell Labs’s /n/sources/plan9/sys/src/cmd/ip/ipconfig
--rw-rw-r-- glenda sys 5293 May 1 2012 ipconfig.h --rw-rw-r-- glenda sys 20646 Dec 13 2012 ipv6.c --rw-rw-r-- glenda sys 40479 Jun 24 2013 main.c --rw-rw-r-- glenda sys 575 Mar 3 2008 mkfile --rw-rw-r-- glenda sys 1046 Jul 19 2007 ppp.c