The following reply was made to PR kern/34517; it has been noted by GNATS.

From: gson@gson.org (Andreas Gustafsson)
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/34517 (re(4) drops all traffic in promiscuous mode)
Date: Sun, 26 Nov 2006 22:20:48 +0200

 tsutsui@NetBSD.org wrote:
 > State-Changed-From-To: open->feedback
 > State-Changed-Why:
 > Is there still this problem on -current? It works for me:
 
 I tried a kernel built from yesterday's -current sources.  It now
 works better but still not well: packets are still dropped, but now
 only for the first few seconds after tcpdump is started.  After that,
 traffic starts flowing again.
 
 In my latest test, I started a tcpdump about two seconds after
 starting a ping; note how packets 2 through 4 are missing from the
 the ping output:
 
   $ ping -n 10.0.1.254
   PING 10.0.1.254 (10.0.1.254): 56 data bytes
   64 bytes from 10.0.1.254: icmp_seq=0 ttl=255 time=3.215 ms
   64 bytes from 10.0.1.254: icmp_seq=1 ttl=255 time=3.250 ms
   64 bytes from 10.0.1.254: icmp_seq=5 ttl=255 time=3.245 ms
   64 bytes from 10.0.1.254: icmp_seq=6 ttl=255 time=3.251 ms
   64 bytes from 10.0.1.254: icmp_seq=7 ttl=255 time=3.272 ms
 
 In the output from tcpdump itself, you see the requests but not
 the responses:
 
   $ sudo tcpdump -n -i re0
   tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
   listening on re0, link-type EN10MB (Ethernet), capture size 96 bytes
   22:03:03.805794 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 2
   22:03:04.805817 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 3
   22:03:05.805805 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 4
   22:03:06.805818 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 5
   22:03:06.808886 IP 10.0.1.254 > 10.0.1.1: icmp 64: echo reply seq 5
   22:03:07.805841 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 6
   22:03:07.808915 IP 10.0.1.254 > 10.0.1.1: icmp 64: echo reply seq 6
   22:03:08.805851 IP 10.0.1.1 > 10.0.1.254: icmp 64: echo request seq 7
   22:03:08.808945 IP 10.0.1.254 > 10.0.1.1: icmp 64: echo reply seq 7
 
 Here's the output from "ifconfig re0":
 
   $ ifconfig re0
   re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 	  capabilities=3f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
 	  enabled=0
 	  address: 00:50:fc:fe:81:9a
 	  media: Ethernet autoselect (100baseTX full-duplex)
 	  status: active
 	  inet 10.0.1.1 netmask 0xffffff00 broadcast 10.0.1.255
 	  inet6 fe80::250:fcff:fefe:819a%re0 prefixlen 64 scopeid 0x2
 
 -- 
 Andreas Gustafsson, gson@gson.org