[Bug 1766] nfqueue randomly drops packets with same tuple

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1766

--- Comment #10 from Antonio Ojea <antonio.ojea.garcia at gmail.com> ---
@pablo I'm rereading 368982cd7d1bd41cd39049c794990aca3770db44 , and the problem
comes with 

> NAT mangling for the packet losing race is corrected by using the conntrack information that won race.

I don't have enough knowledge on the codebase to fully understand all the
logic, but I think the problems comes because the packet is enqueued in
postrouting and the NAT is redone ... but IIUIC is not considering the hook
from when the function is called, so it redoes all the NAT, in this case the
PREROUTING NAT.

What if it ONLY redoes the part of NAT that belongs to the hook where is this
called, is that possible? does it make sense?

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