ref: 50791b875552b0dc5748aa67c95776736f6ff4b7
dir: /sys/src/cmd/ip/dhcpd/testping.c/
#include <u.h> #include <libc.h> #include <ip.h> #include <bio.h> #include <ndb.h> #include "dat.h" char *blog = "ipboot"; void main(int argc, char **argv) { fmtinstall('E', eipconv); fmtinstall('I', eipconv); if(argc < 2) exits(0); if(icmpecho(argv[1])) fprint(2, "%s live\n", argv[1]); else fprint(2, "%s doesn't answer\n", argv[1]); }