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| 01:27.09 | jalbretsen | Well, LibreOffice in Fedora 16 seems to be full of fail. Who knew bulleted lists were so hard to do |
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| 17:37.50 | goozbach | any tun/tap gurus online? |
| 17:42.59 | sjansen | goozbach: Just ask your question. You never know. |
| 17:43.16 | sjansen | Someone might knnow the answer, but not consider themselves an expert. |
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| 17:45.05 | goozbach | I'm trying to get a physical nic (eth1) to listen on two mac addresses (ethernet layer) |
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| 17:45.24 | sjansen | `ls`: cannot open directory : Permission denied |
| 17:45.30 | goozbach | if it was layer 3 I'd just do ifup eth1:0 |
| 17:45.38 | goozbach | and add an interface |
| 17:45.42 | goozbach | but I need this at layer2 |
| 17:46.02 | goozbach | I'm thinking the right answer is a TAP interface bridged to eth1 |
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| 18:09.21 | sjansen | So my imperfect understanding is that a tap device lets a process inject or siphon ethernet frames without the kernels stack seeing them. I haven't found absolute confirmation, but I don't think it's possible to convince the kernel's ip stack to work with a tap since the assumption is the ip stack will be implemented by the process using the tap. |
| 18:09.51 | eightyeight | http://www.zdnet.com/blog/open-source/apple-gets-kicked-in-the-teeth-by-german-patent-lawsuit-decisions/10267 |
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| 18:11.22 | goozbach | sjansen: so that's why qemu works but my hodgepoge doesnt |
| 18:14.36 | sjansen | I've never worked with it, but this project might have what you need: http://wiki.virtualsquare.org/wiki/index.php/Main_Page |
| 18:15.03 | sjansen | Specifically, I think this component: http://wiki.virtualsquare.org/wiki/index.php/VDE |
| 18:15.45 | sjansen | Of course that's an opinion based on almost complete ignorance. |
| 18:17.01 | goozbach | interesting |
| 18:18.47 | goozbach | this looks promsing: http://www.primianotucci.com/default.php?view=57 |
| 18:18.56 | goozbach | haven't read it all but it's closest to what I want to do |
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| 18:31.17 | sjansen | The source for multimac is super simple. As far as I can tell, it's just copying ethernet frames between tap devices. |
| 18:32.51 | sjansen | Maybe I'm missing a step, but without rewrite MACs I'm not sure how that'll help. |
| 18:34.42 | sjansen | goozbach: Here's an idea. How about arptables? It can mangle MACs. |
| 18:36.25 | sjansen | I assume all you really need to do is forge arp responses and mangle destination MACs of incoming frames? |
| 18:39.38 | sjansen | wonders how evil it would be briidge eth0 and lo |
| 18:40.20 | jsmith | sjansen: Oooh, purely evil :-) |
| 18:43.08 | sjansen | realizes there's a good chance AoE doesn't care about ARP |
| 18:44.28 | goozbach | sjansen: that may be likely |
| 18:44.35 | goozbach | as it's a layer2 protocol |
| 18:44.55 | goozbach | who has F2:3C:91:DF:EA:D7? |
| 18:44.58 | goozbach | well F2:3C:91:DF:EA:D7 does |
| 18:45.09 | goozbach | arp is the glue from layer2 to layer3 |
| 18:55.38 | goozbach | sjansen I found it!!!! |
| 18:55.43 | goozbach | it's *THIS* easy: |
| 18:55.45 | goozbach | ip link add dev eth1a link eth1 type macvlan |
| 18:56.04 | goozbach | creates a new device named eth1a which shares the physical layer of eth1 |
| 18:56.14 | goozbach | buhahah!!! |
| 18:56.59 | sjansen | Score another win for iproute. :-) |
| 18:57.20 | goozbach | I knew it had to be possible! |
| 18:57.36 | goozbach | about once every year or so I learn a new trick with iproute |
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| 20:07.15 | Tene | It's a good idea to read through http://lartc.org/ every once in a while, looking for anything that catches your interest. |
| 20:07.17 | brac | [Linux advanced Routing & Traffic Control HOWTO] |
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