Re: Packets not traversing postrouting chain

Pablo Neira Ayuso <[email protected]>
Newsgroups gmane.comp.security.firewalls.netfilter.general
Message-ID <Z-rIIhraCyG8KELs@calendula> 
On Mon, Mar 31, 2025 at 11:19:31AM -0500, Bradley Hook wrote:
[...]
> The issue we are seeing is that packets from 192.168.122.252 to
> 8.8.8.8 are not traversing the postrouting chain at all. We can see
> the packets leaving the interface without NAT applied. We can see the
> packets hitting the forward chain with the trace. Other traffic from
> other subnets are being masqueraded just fine. We just aren't seeing
> the packets from 192.168.122.x/24 hit any postrouting rules at all.

Can you check if connection tracking is tagging these packets as
invalid?
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