===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/systat/if.c,v
retrieving revision 1.16
retrieving revision 1.17
diff -c -r1.16 -r1.17
*** src/usr.bin/systat/if.c	2009/08/13 23:45:35	1.16
--- src/usr.bin/systat/if.c	2009/11/23 01:51:41	1.17
***************
*** 1,4 ****
! /*	$OpenBSD: if.c,v 1.16 2009/08/13 23:45:35 deraadt Exp $ */
  /*
   * Copyright (c) 2004 Markus Friedl <markus@openbsd.org>
   *
--- 1,4 ----
! /*	$OpenBSD: if.c,v 1.17 2009/11/23 01:51:41 canacar Exp $ */
  /*
   * Copyright (c) 2004 Markus Friedl <markus@openbsd.org>
   *
***************
*** 39,44 ****
--- 39,45 ----
  	struct ifcount	ifs_cur;
  	struct ifcount	ifs_old;
  	struct ifcount	ifs_now;
+ 	char		ifs_flag;
  } *ifstats;
  
  static	int nifs = 0;
***************
*** 187,193 ****
  	struct sockaddr_dl *sdl;
  	char *buf, *next, *lim;
  	static int s = -1;
! 	int mib[6];
  	size_t need;
  
  	mib[0] = CTL_NET;
--- 188,194 ----
  	struct sockaddr_dl *sdl;
  	char *buf, *next, *lim;
  	static int s = -1;
! 	int mib[6], i;
  	size_t need;
  
  	mib[0] = CTL_NET;
***************
*** 270,276 ****
--- 271,288 ----
  		UPDATE(ifc_co, ifm_data.ifi_collisions);
  		ifs->ifs_cur.ifc_flags = ifm.ifm_flags;
  		ifs->ifs_cur.ifc_state = ifm.ifm_data.ifi_link_state;
+ 		ifs->ifs_flag++;
  	}
+ 
+ 	/* remove unreferenced interfaces */
+ 	for (i = 0; i < nifs; i++) {
+ 		ifs = &ifstats[i];
+ 		if (ifs->ifs_flag)
+ 			ifs->ifs_flag = 0;
+ 		else
+ 			ifs->ifs_name[0] = '\0';
+ 	}
+ 
  	free(buf);
  }