On Thursday 2011-06-23 17:17, Greg Scott wrote: >Wow, more than a week later and silence from everyone - am I on my own >with this problem? Why would NATing in both PREROUTING and POSTROUTING >work **only** when I watch it with tcpdump and not work otherwise? >Surely I can't be the only one seeing this problem? Potential explanation: Packets being dropped inside the routing core due to violation of RP filter. [tcpdump hooks in very early and thus can still see stuff.] -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html