[Bug 1263] Device or resource busy on nat loading.

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Thu Jun 21 11:14:59 CEST 2018


--- Comment #4 from José Pekkarinen <koalinux at gmail.com> ---
(In reply to Florian Westphal from comment #1)
> make sure iptable_nat and ip6table_nat modules are not present/loaded.
> This restriction was added in 4.16 as parallel use of iptables/nftables nat
> doesn't work.  The next Linux release (4.18?) doesn't have this limitation
> anymore.

Seems they get auto loaded. I tried blacklisting on /etc/modprobe.d and
on kernel cmd, both doesn't prevent them from loading. When trying to
modprobe -r, ip6table_nat does, iptable_nat doesn't, and it gets in a
rabbit hole of used by others, nf_nat_ipv4 between others.

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