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Re: VE with veth, using MAC address it shouldn't be aware of [message #10150 is a reply to message #10148]

Fri, 09 February 2007 18:41

samlt
Messages: 8
Registered: February 2007

Junior Member

And now the million dollar (or euro..) question, why does it work if I make a bridge with only this interface (well this also work if I bridge several interfaces..) ?

brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.001851b4a685       no              veth103.0

and

ip a l 
4: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:30:1b:b6:f2:1c brd ff:ff:ff:ff:ff:ff
    inet 10.3.0.50/24 scope global eth0
...
9: veth103.0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc noqueue 
    link/ether 00:18:51:29:5c:12 brd ff:ff:ff:ff:ff:ff
6: br0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc noqueue 
    link/ether 00:18:51:b4:a6:85 brd ff:ff:ff:ff:ff:ff
    inet 10.4.0.50/24 scope global br0

on the VE0

tcpdump  -i 3 -e
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br0, link-type EN10MB (Ethernet), capture size 68 bytes
(...)
19:33:34.851958 00:18:51:ce:18:98 (oui Unknown) > 00:18:51:b4:a6:85 (oui Unknown), ethertype IPv4 (0x0800), length 98: debnated > linksys: ICMP echo request, id 15397, seq 1, length 64
19:33:34.852498 00:18:51:b4:a6:85 (oui Unknown) > 00:18:51:ce:18:98 (oui Unknown), ethertype IPv4 (0x0800), length 98: linksys > debnated: ICMP echo reply, id 15397, seq 1, length 64

This means the packet are copied when the interface is a bridge(or at least when it's not a veth nor a venet interface)?

By the way, when you said, the packet are copied, it's the kernel which makes the copy, right?

Thank you

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[Message index]

		SOLVED VE with veth, using MAC address it shouldn't be aware of By: samlt on Sun, 04 February 2007 10:02
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Mon, 05 February 2007 11:08
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Mon, 05 February 2007 16:02
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Mon, 05 February 2007 16:18
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Mon, 05 February 2007 17:43
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Tue, 06 February 2007 11:03
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Tue, 06 February 2007 11:44
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Thu, 08 February 2007 18:33
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Fri, 09 February 2007 12:07
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Fri, 09 February 2007 16:20
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Fri, 09 February 2007 17:17
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Fri, 09 February 2007 18:41
		Re: VE with veth, using MAC address it shouldn't be aware of By: Andrey Mirkin on Fri, 09 February 2007 23:00
		Re: VE with veth, using MAC address it shouldn't be aware of By: samlt on Sat, 10 February 2007 01:31

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