On Wednesday 2009-03-25 15:27, Kristian Evensen wrote: >Hello, > >I have a setup where I have a sender and a multihomed receiver >connected through a switch, and I am working on a module that >currently does more or less the same as RAWDNAT [1] (at least it is >supposed to). My goal is to redirect packets destined for one >interface on the multihomed receiver to the other, and changing the IP >address works. Unfortunately, the packet keeps the original >destination MAC-address, so it arrives at the wrong interface on the >multihomed receiver. Ah that might also explain why I observed that packets get lost sometimes.. >My theory is that the original MAC-address is somehow added to the SKB >before it reaches the output-part of the RAW-table (which is where I >hook in), Routing is done before rawpost, yes, but before the (traditional) raw table. (it's in skb->dst) >because of the sender's mapping between the original >destination IP and MAC. However, I have not been able to figure this >out. Also, I looked at the NAT-code, but it seems to "only" change >IP-address as well. Have I overlooked something or am I correct? Most likely RAWS/DNAT should gain another option to also tweak the MAC daddr, by calling ip_route_output_key to get a new skb->dst. >Btw, RAWDNAT throws up a couple of errors on my machine, so I have not >been able to see it it does what I want to do. Which errors? -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
