Hi all, I have just switched to Fedora Core 2 and thus kernel 2.6.5 and I still am witnessing the change of ip address on my 2 ppp links. (ie. packets with the wrong src ip are going over the links). I believe the netfilter core team is aware of this problem and is currently working on it. I am working on it too. It would really help me if someone could narrow down the places in the kernel code I should be analysing. Currently I am looking at ipt_MASQUERADE.c and ip_nat_core.c . So far I have only put printouts to see where the problem might be. Any suggestion/comment/tips are greatly appreciated. I have posted a couple of messages regarding this topic but I have received no reply. I believe my last post was on Sept 15 with no reply. Thank you very much Dravya