Re: [REGRESSION] 6.19.4 stable netfilter / nftables [resolved]

[Greg KH <gregkh@linuxfoundation.org>]

On Fri, Feb 27, 2026 at 08:12:59AM -0500, Genes Lists wrote:
> On Fri, 2026-02-27 at 07:23 -0500, Genes Lists wrote:
> > On Fri, 2026-02-27 at 09:00 +0100, Thorsten Leemhuis wrote:
> > > Lo!
> > > 
> > 
> > Repeating the nft error message here for simplicity:
> > 
> >  Linux version 7.0.0-rc1-custom-1-00124-g3f4a08e64442 ...
> >   ...
> >   In file included from /etc/nftables.conf:134:2-44:
> >   ./etc/nftables.d/set_filter.conf:1746:7-21: Error:
> >   Could not process rule: File exists
> >                  xx.xxx.xxx.x/23,
> >                  ^^^^^^^^^^^^^^^
> > 
> 
> Resolved by updating userspace.
> 
> I can reproduce this error on non-production machine and found this
> error is resolved by re-bulding updated nftables, libmnl and libnftnl:
> 
> With these versions nft rules now load without error:
> 
>  - nftables commit de904e22faa2e450d0d4802e1d9bc22013044f93
>  - libmnl   commit 54dea548d796653534645c6e3c8577eaf7d77411
>  - libnftnl commit 5c5a8385dc974ea7887119963022ae988e2a16cc
> 
> All were compiled on machine running 6.19.4.

Odd, that shouldn't be an issue, as why would the kernel version you
build this on matter?

What about trying commit f175b46d9134 ("netfilter: nf_tables: add
.abort_skip_removal flag for set types")?

thanks,

greg k-h