On Thu, Sep 30, 2021 at 08:04:08PM +0200, Pablo Neira Ayuso wrote: > IIRC, they are read from the kernel, then not displayed, but it should > be easy to only fetch the set, I'll prepare a patch to speed -t > listing. For the record, patch to speed up listing with -t: https://patchwork.ozlabs.org/project/netfilter-devel/patch/20211002115059.26792-1-pablo@xxxxxxxxxxxxx/