fprintf(stderr, NLS_CATGETS(catfd, ifconfigSet, ifconfig_unkn, "%s: unknown interface.\n"), name);
fprintf (stderr, _("%s: unknown interface.\n"), name);
if_print(char *ifname){  struct interface ife;  if (ifname == (char *)NULL) {    FILE *fd = fopen(_PATH_PROCNET_DEV, "r");    char buffer[256];    fgets(buffer, 256, fd);	/* chuck first two lines */    fgets(buffer, 256, fd);    while (!feof(fd)) {      char *name = buffer;      char *sep;      if (fgets(buffer, 256, fd) == NULL)	break;      sep = strrchr(buffer, ':');      if (sep)	*sep = 0;      while (*name == ' ') name++;      if (if_fetch(name, &ife) < 0) {	fprintf(stderr, NLS_CATGETS(catfd, ifconfigSet, 		      ifconfig_unkn, "%s: unknown interface.\n"),		name);	continue;      }            if (((ife.flags & IFF_UP) == 0) && !opt_a) continue;      ife_print(&ife);    }    fclose(fd);  } else {    if (if_fetch(ifname, &ife) < 0)      fprintf(stderr, NLS_CATGETS(catfd, ifconfigSet, 		      ifconfig_unkn, "%s: unknown interface.\n"), ifname);    else       ife_print(&ife);  }}