Thread (21 messages) 21 messages, 6 authors, 2003-01-06

Re: SIOCADDMULTI for unicast broken

From: jamal <hidden>
Date: 2003-01-04 19:04:17


On Sat, 4 Jan 2003, Julian Anastasov wrote:
	Hello,

On Sat, 4 Jan 2003, jamal wrote:
quoted
I think hacking the ARP code to do this would be horrible - one way to do
it is write a tc module that mungles outgoing ARPs to substitute the src
MAC address based on src IP.
	You can do it with arptables (still not sure how) or with
I havent seen user-space arptables around.
arprules+iparp:

# send all our requests from VRIP with VMAC
ip arp add table output from 1.2.3.4 llsrc 00:00:5E:00:01:10

http://www.ssi.bg/~ja/#iparp
I like this concept. This + the patch i posted should resolve the problem
of getting multiple VRIDs on a single interface.
[Although you could do it in a lot less code, maybe 50%, using
some of the tc filter extensions i am working on; also a lot less code
than arptables]
	But this is not enough for VRRP. For Linux we need a
way to bind VRIPs to source VMACs or sort of this. I'm cc-ing to Alexandre
Cassen as he is working on VRRP (http://keepalived.sourceforge.net/).
I hope he can shed some light on the VRRP needs.
I guess there is more than one VRRP implementation on Linux; the one i
played with is from some crazy Frenchman named Jerome Ettiene;->
With two conecpts being addressed i.e patch like that you have +
the patch i posted i dont see any orther reason VRRP to be hindered.

cheers,
jamal
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