The following reply was made to PR kern/29126; it has been noted by GNATS.

From: Kimmo Suominen <kim@tac.nyc.ny.us>
To: gnats-bugs@netbsd.org
Cc: Christos Zoulas <christos@zoulas.com>,
	Arto Selonen <arto@selonen.org>
Subject: Re: kern/29126: tcpdump leads to packet loss
Date: Sat, 5 Feb 2005 19:52:17 -0500

 And a tlp patch is below...
 
 I've made the patches available over FTP (probably easier than trying
 to extract them from GNATS).
 
 ftp://ftp.gw.com/pub/people/kim/netbsd/netbsd-2.99.15-tcpdump-ex.diff
 ftp://ftp.gw.com/pub/people/kim/netbsd/netbsd-2.99.15-tcpdump-gsip.diff
 ftp://ftp.gw.com/pub/people/kim/netbsd/netbsd-2.99.15-tcpdump-tlp.diff
 
 Regards,
 + Kim
 -- 
 Kimmo Suominen
 
 
 Index: tulip.c
 ===================================================================
 RCS file: /cvsroot/src/sys/dev/ic/tulip.c,v
 retrieving revision 1.131
 diff -u -r1.131 tulip.c
 --- tulip.c	30 Jan 2005 17:27:38 -0000	1.131
 +++ tulip.c	6 Feb 2005 00:32:34 -0000
 @@ -497,6 +497,7 @@
  	strcpy(ifp->if_xname, sc->sc_dev.dv_xname);
  	ifp->if_softc = sc;
  	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 +	sc->sc_if_flags = ifp->if_flags;
  	ifp->if_ioctl = tlp_ioctl;
  	ifp->if_start = tlp_start;
  	ifp->if_watchdog = tlp_watchdog;
 @@ -1001,7 +1002,22 @@
  	case SIOCGIFMEDIA:
  		error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd);
  		break;
 -
 +	case SIOCSIFFLAGS:
 +		/* If the interface is up and running, only modify the receive
 +		 * filter when setting promiscuous or debug mode.  Otherwise
 +		 * fall through to ether_ioctl, which will reset the chip.
 +		 */
 +#define RESETIGN (IFF_CANTCHANGE|IFF_DEBUG)
 +		if (((ifp->if_flags & (IFF_UP|IFF_RUNNING))
 +		    == (IFF_UP|IFF_RUNNING))
 +		    && ((ifp->if_flags & (~RESETIGN))
 +		    == (sc->sc_if_flags & (~RESETIGN)))) {
 +			/* Set up the receive filter. */
 +			(*sc->sc_filter_setup)(sc);
 +			error = 0;
 +#undef RESETIGN
 +		} else
 +		/* FALLTHROUGH */
  	default:
  		error = ether_ioctl(ifp, cmd, data);
  		if (error == ENETRESET) {
 @@ -1021,6 +1037,7 @@
  	if (TULIP_IS_ENABLED(sc))
  		tlp_start(ifp);
  
 +	sc->sc_if_flags = ifp->if_flags;
  	splx(s);
  	return (error);
  }
 @@ -1930,6 +1947,7 @@
  	 */
  	ifp->if_flags |= IFF_RUNNING;
  	ifp->if_flags &= ~IFF_OACTIVE;
 +	sc->sc_if_flags = ifp->if_flags;
  
   out:
  	if (error) {
 @@ -2094,6 +2112,7 @@
  	 * Mark the interface down and cancel the watchdog timer.
  	 */
  	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 +	sc->sc_if_flags = ifp->if_flags;
  	ifp->if_timer = 0;
  
  	/*
 Index: tulipvar.h
 ===================================================================
 RCS file: /cvsroot/src/sys/dev/ic/tulipvar.h,v
 retrieving revision 1.51
 diff -u -r1.51 tulipvar.h
 --- tulipvar.h	24 Oct 2004 00:35:08 -0000	1.51
 +++ tulipvar.h	6 Feb 2005 00:32:35 -0000
 @@ -451,6 +451,8 @@
  	struct tulip_txsq sc_txfreeq;	/* free Tx descsofts */
  	struct tulip_txsq sc_txdirtyq;	/* dirty Tx descsofts */
  
 +	short	sc_if_flags;
 +
  	int	sc_rxptr;		/* next ready RX descriptor/descsoft */
  
  #if NRND > 0