Re: [iptables PATCH] nft_ipv{4,6}_xlate: Respect prefix lengths

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On Fri, Nov 25, 2016 at 06:52:55PM +0100, Phil Sutter wrote:
> This was an annoying bug in the translator since it silently dropped
> crucial information which is easily overlooked:
> 
> | $ iptables-translate -A INPUT -s 192.168.0.0/24 -j ACCEPT
> | nft add rule ip filter INPUT ip saddr 192.168.0.0 counter accept
> | $ ip6tables-translate -A INPUT -s feed:babe::/64 -j ACCEPT
> | nft add rule ip6 filter INPUT ip6 saddr feed:babe:: counter accept
> 
> To my surprise, this fix works really well in all kinds of situations:
> 
> | $ iptables-translate -A INPUT -s 1.2.3.4/0 -j ACCEPT
> | nft add rule ip filter INPUT counter accept
> |
> | $ iptables-translate -A INPUT -s 1.2.3.4/23 -j ACCEPT
> | nft add rule ip filter INPUT ip saddr 1.2.2.0/23 counter accept
> |
> | $ iptables-translate -A INPUT -s 1.2.3.4/24 -j ACCEPT
> | nft add rule ip filter INPUT ip saddr 1.2.3.0/24 counter accept
> |
> | $ iptables-translate -A INPUT -s 1.2.3.4/32 -j ACCEPT
> | nft add rule ip filter INPUT ip saddr 1.2.3.4 counter accept
> |
> | $ iptables-translate -A INPUT -s 1.2.3.4/255.255.0.0 -j ACCEPT
> | nft add rule ip filter INPUT ip saddr 1.2.0.0/16 counter accept
> 
> Ditto for IPv6.

Applied, thanks!
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