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SubjectRe: Bridging with 2.2.5

I had this problem too... you made the right steps but not all of them...
you should enable forwarding with ipchains:

echo 1 > /proc/sys/net/ipv4/ip_forward
ipchains -P forward DENY
ipchains -A forward -s 127.0.0.2/24 0:65535 -d 0.0.0.0/0 0:65535 -j MASQ -p ICMP
ipchains -A forward -s 127.0.0.3/24 0:65535 -d 0.0.0.0/0 0:65535 -j MASQ -p ICMP

you may want also to forward TCP and UDP also... it would be highly
recommended but it depends on your intentions/setup....

I would also reccomend to change the IP addresses of the cards to some
other available class lile 192.168.xxx.xxx
and to upgrade your kernel to linux-2.2.10

In the same way you describe and I added to it what it is desbribed above
the bridgind works fine here at my workplace....

On Fri, 11 Jun 1999 jake@broadjump.com wrote:

> I have been unsuccessful in getting bridging to work with RedHat 6.0. I
> can see network traffic on both ethernet interfaces with tcpdump, and
> brcfg says bridging is enabled. My ethernet interfaces are in promiscuous
> mode, and 802.1 packets are being sent out from my box. But I cannot ping
> two machines separated by the bridge. I've read every HOWTO I can find,
> searched DejaNews and many archives for answers, but to no avail. I have
> attached my configuration below. Personal replies welcome.
>
> # uname -a
> Linux cerberus 2.2.5-15 #7 Thu Jun 10 14:57:48 CDT 1999 i586 unknown
>
> # ifconfig
> eth0 Link encap:Ethernet HWaddr 00:E0:29:2B:9E:67
> inet addr:127.0.0.2 Bcast:127.255.255.255 Mask:255.0.0.0
> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
> RX packets:502186 errors:0 dropped:0 overruns:0 frame:0
> TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:100
> Interrupt:10 Base address:0xd800
>
> eth1 Link encap:Ethernet HWaddr 00:20:AF:37:8C:21
> inet addr:127.0.0.3 Bcast:127.255.255.255 Mask:255.0.0.0
> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
> RX packets:18 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1137 errors:0 dropped:0 overruns:0 carrier:755
> collisions:0 txqueuelen:100
> Interrupt:5 Base address:0x300
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:3924 Metric:1
> RX packets:46 errors:0 dropped:0 overruns:0 frame:0
> TX packets:46 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
>
> # netstat -nr
> Kernel IP routing table
> Destination Gateway Genmask Flags MSS Window irtt Iface
> 127.0.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> 127.0.0.3 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth0
> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth1
>
> # ./brcfg
> bridging is ENABLED debugging is ENABLED prot-stats are DISABLED
> bridge id 0x0080 00:e0:29:2b:9e:67
> designated root 0x0080 00:d0:58:83:fb:c1
> bridge max age 20 max age 5120
> bridge hello time 2 hello time 512
> bridge forward delay 15 forward delay 3840
> root path cost 100 root port 1
> flags NONE
> --- port stats ---
> port 1 port id 0x8001 port state LISTENING (0x1)
> designated root 0x0080 00:d0:58:83:fb:c1
> designated bridge 0x0080 00:d0:58:83:fb:c1
> path cost 100 designated cost 0
> designated port 32787 flags NONE
> port 2 port id 0x8002 port state LISTENING (0x1)
> designated root 0x0080 00:d0:58:83:fb:c1
> designated bridge 0x0080 00:e0:29:2b:9e:67
> path cost 0 designated cost 100
> designated port 32770 flags NONE
> Policy Accept all protocols
> exempt protocols 0
>
> # cat /proc/sys/net/ipv4/ip_forward
> 1
>
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