Hello Jo-Philipp

I found the following summary that describes my problem. See my link [1].
And why me need this pre_* hooks in fw4 as I suggested.

I have found the following description about priority and accept.
This is the paragraph:

Base chain priority:

Each nftables base chain is assigned a priority that defines its ordering among other base chains, flowtables, and Netfilter internal operations at the same hook. For example, a chain on the prerouting hook with priority -300 will be placed before connection tracking operations.

NOTE: If a packet is accepted and there is another chain, bearing the same hook type and with a later priority, then the packet will subsequently traverse this other chain. Hence, an accept verdict - be it by way of a rule or the default chain policy - isn't necessarily final. However, the same is not true of packets that are subjected to a drop verdict. Instead, drops take immediate effect, with no further rules or chains being evaluated.

From my point of view it makes sense to add my changes in fw4, otherwise it won't work.
When I read it like this then your suggestion does not work?



Kind regards

Florian

[1] https://wiki.nftables.org/wiki-nftables/index.php/Configuring_chains#Base_chain_types

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