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Incomplete Kernel build

Kernel not recognizing your hardware? Problems with power management or PCMCIA? What hardware is compatible with Gentoo? See here. (Only for kernels supported by Gentoo.)
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asdfmann
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Joined: Tue Jun 06, 2023 5:47 pm

Incomplete Kernel build

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Post by asdfmann » Wed Dec 03, 2025 7:30 pm

Hi.

Since at least gentoo-sources-6.17.8 my kernel doesn't build properly anymore.
At boot I can see iptables complaining that ip_tables.ko isn't present and that file is indeed not built on make modules.
There are possibly other modules that aren't built, but I don't know which.
Additionally, when booting the new kernel, I don't have network access, although the driver for my ethernet card (igc.ko) is built.

Logs for Kernel 6.18.0:
Kernel config: https://nopaste.net/87oHqpYPUX
make -j20 bzImage: https://nopaste.net/G67Ss9H2wo
make -j20 modules: https://nopaste.net/P0w0NWxk6M
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grknight
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Posts: 2565
Joined: Fri Feb 20, 2015 9:36 pm

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Post by grknight » Wed Dec 03, 2025 7:52 pm

Which iptables support are you using? legacy, nftables, etc? Check with eselect iptables list

If legacy, such as xtables-legacy-multi, then CONFIG_NETFILTER_XTABLES_LEGACY is required.

Alternatively, enabling the nftables USE on net-firewall/iptables and then selecting an nft layer for iptables in eselect may cause less headaches in the future.
(This is a compatibility layer in user space to nftables.)
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asdfmann
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Joined: Tue Jun 06, 2023 5:47 pm

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Post by asdfmann » Wed Dec 03, 2025 8:03 pm

"eselect iptables list" only lists " [1] xtables-legacy-multi *"
With CONFIG_NETFILTER_XTABLES_LEGACY ip_tables.ko is built.
I'm running genkernel now and will try the new kernel later today.

€dit: Switched to xtables-nft-multi
€2: Seems to be working now. Thank you.
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