On Tue, Jul 27, 2021 at 05:45:09PM -0500, Alex Forster wrote: > > Yes, you can update iptables-nft to use nft_log instead of xt_LOG, > > that requires no kernel upgrades and it will work with older kernels. > > I've always been under the impression that mixing xtables and nftables > was impossible. Forgive me, but I just want to clarify one more time: > you're saying we should be able to modify iptables-nft such that the > following rule will use xt_bpf to match a packet and then nft_log to > log it, rather than xt_log as it does today? You could actually use *any* of the existing extensions to match a packet, the matching side is completely irrelevant to this picture. As I said, userspace iptables-nft can be updated to use nft_log instead of xt_LOG. > iptables-nft -A test-chain -d 11.22.33.44/32 -m bpf --bytecode > "1,6 0 0 65536" -j NFLOG --nflog-prefix > "0123456789012345678901234567890123456789012345678901234567890123456789" > > We had some unexplained performance loss when we were evaluating > switching to iptables-nft, but if this sort of mixing is possible then > it is certainly worth reevaluating.
