I had the same problem. If you are not using virtual machines then # systemctl disable libvirtd works and is easily reversible. Alan On 18/04/2020 23:03, Alessandro Baggi wrote: > Il 17/04/20 11:01, Alessandro Baggi ha scritto: >> Hi list, >> >> I'm studying nftables. I'm using CentOS 8.1 (Gnome) and I disabled >> firewalld. I noticed that a default policy is created with tables and >> chains probably for firewalld. >> >> So I created a .nft script where I stored my rules with a flush for >> previous ruleset, then saved on /etc/sysconfig/nftables.conf and the >> enabled nftables service. >> >> Running the script with nft -f script.nft all work as expected but >> when rebooting, running nft list ruleset I find my rules and the >> default policy (chains and tables) that I would not have in my >> configuration. >> >> My nftables.conf contains only my ruleset. >> >> For example, running nft list tables I found several default tables >> like: >> >> table ip filter >> table ip6 filter >> table bridge filter >> table ip nat >> table ip mangle >> >> So probably there is something that is applying its policy but I >> ignore what is. >> >> Can someone point me in the right direction? >> >> Thank you in advance. >> > Hi have not received any replies but I tried to investigate. After > checking configuration files in my system I supposed that this could > caused by a daemon, so I found that libvirtd push some rules. > > running virsh nwfilter-list I get: > > UUID Nome > ------------------------------------------------------------------ > 34fe8cba-af99-4438-8efc-b135143425e2 allow-arp > dc110112-3824-4cf3-946f-ba6e15cd29c3 allow-dhcp > fecc383a-bab5-465d-a5be-98834fb626ce allow-dhcp-server > 761e7132-8738-47c2-8101-275d6fd6a347 allow-incoming-ipv4 > d37b017f-8f21-4ad0-9fa6-052a5cb1ed2e allow-ipv4 > a8c740d5-328c-452e-bae7-9828c54f95b7 clean-traffic > 296bdfad-11d9-4aa0-9817-4656ef2be6e5 clean-traffic-gateway > 69215a61-bff5-482a-b913-589bb1ce18f2 no-arp-ip-spoofing > 70c61f0a-c005-407f-843d-d13c2495f05d no-arp-mac-spoofing > 386cd2f4-7272-43e2-ba1f-80cb3518649c no-arp-spoofing > 9117fa21-e3d6-4c32-9cdf-af97ebd6599e no-ip-multicast > 7a964470-4f74-4eef-9fec-a0e9a79e168d no-ip-spoofing > 8c9e45a3-5d44-4641-b23d-eded5c1f1632 no-mac-broadcast > 82dcd4f0-f55a-43ad-b520-d4c8d4bf37cd no-mac-spoofing > bdd0ba54-7ce0-4a2c-9c25-c24072d364ba no-other-l2-traffic > fc50783e-d32b-42ba-8380-7576c4388244 no-other-rarp-traffic > edfc1bb3-b325-4f8d-8c5b-423e55da66eb qemu-announce-self > 8556bd82-dc97-47b0-b573-5986ebbad3b2 qemu-announce-self-rarp > > If I will remove these libvirt filters I will get errors? > > Thank you in advance. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos