Re: any way to reset all marked connections when using CONNMARK?

----- "Chris Friesen" [off-list ref] wrote: -----

We've got a scenario where we want to use CONNMARK to mark connections
that have passed a large number of rules in order to allow packets
from those connections to skip rules in the future (for performance
reasons).

However, when we add new rules we want to ensure that all the
connections need to pass the new rules as well.

It has been proposed to add a custom patch to clear the mark for all
marked connections--is there a better way of doing this?

I thought maybe we could use the CONNMARK as a generation count and
bumping it up each time a rule is added. This would require updating
the bypass rule each time we modify the other rules though. If there
are better options I'd like to hear them.

Using conntrack-tools might help:

conntrack --update --mark 0