Hi,
I suspect the Windows machines cache the ARP reply from earlier
on. Before you setup the bridge, you probably have the exact
same IP address assigned to one of the eth0 or eth1, right?
Try this: after bringing up the bridge interface, send a gratuitious
ARP to the segment. Something like:
arping -q -A -c 1 -I ${DEVICE} ${IPADDR}
(arping is part of the iputils package).
cheers,
Lennert
On Wed, Oct 09, 2002 at 05:09:44PM +0400, Alex Torkhov wrote:
> Hello.
>
> I should send you full report:
> I have Linux 2.4.18, bridge-utils 0.9.5. My IP is 192.168.7.13.
> I am pinging 192.168.7.1 - Linux machine.
>
> I run following commands:
> # ifconfig eth0 0.0.0.0
> # ifconfig eth1 0.0.0.0
> # brctl addbr br0
> # brctl addif br0 eth0
> # brctl addif br0 eth1
> # ifconfig br0 192.168.7.13
> To wait while bridge enters forwarding state:
> # sleep 30
> 00:08:C7:49:4C:5C is MAC of eth0
> # tcpdump -l -n -p -i eth1 -s 256 ether dst 00:08:C7:49:4C:5C > dst0 &
> # tcpdump -l -n -p -i eth1 -s 256 ether src 00:08:C7:49:4C:5C > src0 &
>
> 00:80:AD:8A:98:17 is MAC of eth1
> # tcpdump -l -n -p -i eth1 -s 256 ether dst 00:80:AD:8A:98:17 > dst1 &
> # tcpdump -l -n -p -i eth1 -s 256 ether src 00:80:AD:8A:98:17 > src1 &
> # ping -c 4 -n -w 10 192.168.7.1
> # killall tcpdump
>
> Results I get:
> output of commands:
> PING 192.168.7.1 (192.168.7.1): 56 octets data
> --- 192.168.7.1 ping statistics ---
> 4 packets transmitted, 0 packets received, 100% packet loss
>
> src0:
> 16:46:37.562595 arp who-has 192.168.7.1 tell 192.168.7.13
> 16:46:37.563155 192.168.7.13 > 192.168.7.1: icmp: echo request (DF)
> 16:46:38.555681 192.168.7.13 > 192.168.7.1: icmp: echo request (DF)
> 16:46:39.555657 192.168.7.13 > 192.168.7.1: icmp: echo request (DF)
> 16:46:40.555637 192.168.7.13 > 192.168.7.1: icmp: echo request (DF)
>
> dst0:
> 16:46:37.563089 arp reply 192.168.7.1 is-at 0:50:4e:5:70:68
>
> src1: 4 times every 2 seconds:
> 16:46:39.425614 802.1d config TOP_CHANGE 8000.00:08:c7:49:4c:5c.8002 root
> 000.00:08:c7:49:4c:5c pathcost 0 age 0 max 20 hello 2 fdelay 15
>
> dst1:
> 16:46:37.563846 192.168.7.1 > 192.168.7.13: icmp: echo reply
> 16:46:38.556314 192.168.7.1 > 192.168.7.13: icmp: echo reply
> 16:46:39.556307 192.168.7.1 > 192.168.7.13: icmp: echo reply
> 16:46:40.556265 192.168.7.1 > 192.168.7.13: icmp: echo reply
>
> Alex.
>
>
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