This may fix your problem .. echo 1 > proc/sys/net/ipv4/conf/all/accept_source_route ./thanks ilaiy On 10/29/05, Ritesh Kumar <ritesh@xxxxxxxxxx> wrote: > Hi, > I have two tun interfaces on my box and I was trying to route > packets between the two local addresses through a "userspace router" > hooked up to the file descriptors of the tun devices. I see the packet > appearing on both the interfaces (using tcpdump -i) but my (udp) > server listening for my packets on a particular port doesn't get any > of them. I force the packets to not take the localhost route by > explicitly specifying the interface on which I want the packet to be > sent (I think socat udp4:<dest addr>:<port>,interface=<ifname> ...) > does it using setsockopts() ). > In other words it seems that if linux receives a packet through an > interface (not the loopback) which has a src address equal to one of > the local addresses then the packet is not sent to the server > listening for it. Is there a way to work around this? > Searching for this on the web gave me a pointer to a mail in which > routing packets through an ethernet crossover (between two NICs > connected to the same computer) was discussed. It seems that there is > a small patch for it, but I was hoping if somebody had tricks to do it > using configuration changes (routing, /proc/sys settings etc) only. > > Thanks for your attention! > Ritesh > -- > http://www.cs.unc.edu/~ritesh/ > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
