[leglug-users] newer kernel drops packets?

[Edmond]

I have a situation with an embedded router where I went from kernel
2.4.2 to to 2.4.34 (latest). Everything else has not been changed,
including iptables rules. Just the kernel. But now DNS request packets
coming in from the outside are being dropped by the default drop policy.
IN FACT, if I clear the iptables chain, the DNS requests continue to
be dropped so this has nothing to do with iptables.  Again, the same
firewall rules work fine on the first kernel but not the second. They
are both built with packet forwarding and ipfilter iptables/nat capability.

Has anyone seen this before?

Regards,

    Edmond