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From: Florian Westphal <fw@strlen.de>
To: Ttttabcd <ttttabcd@protonmail.com>
Cc: "netfilter-devel@vger.kernel.org" <netfilter-devel@vger.kernel.org>
Subject: Re: Please add Bridge NAT in nftables
Date: Sat, 28 Sep 2019 10:23:58 +0200	[thread overview]
Message-ID: <20190928082358.GJ9938@breakpoint.cc> (raw)
In-Reply-To: <NLT8x0veXvaS6Jvm2H2CHRbzeh2NPv1MBDGtt0t6C47TmsNN6vIjIw42_v6fGXIw552q8AUllbB4Lb09HXVihl_s5cgY9rZVC6qTMIQWaSc=@protonmail.com>

Ttttabcd <ttttabcd@protonmail.com> wrote:
> The NAT function is included in ebtables (although it is very simple, but it is better than nothing), but I did not find the corresponding function in nftables.

You can do stateless mac nat like this:
add rule ... ether saddr set 00:0f:54:0c:11:4

or, with anon map:
add rule ... ether saddr set ip saddr map { 192.168.1.50 :
	00:0f:54:0c:11:4, 192.168.1.100 : 0f:54:0c:11:42 }

or with named map:

add table bridge mynat
add map bridge mynat mymacnatmap "{ type ipv4_addr : ether_addr; flags timeout; }
add rule ... ether saddr set ip saddr map @mynatmap

  reply	other threads:[~2019-09-28  8:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-28  6:06 Please add Bridge NAT in nftables Ttttabcd
2019-09-28  8:23 ` Florian Westphal [this message]
2019-09-28 12:35   ` Ttttabcd

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