From mboxrd@z Thu Jan  1 00:00:00 1970
From: Martin Bednar <martin@serafean.cz>
Subject: Re: nftables vmap concatenations with interval
Date: Wed, 28 Sep 2016 14:51:50 +0200
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References: <11357773.LdaEAIBM0O@nemmerle> <20160927191101.GA3195@salvia>
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To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: netfilter@vger.kernel.org

Le Tuesday, September 27, 2016 9:11:01 PM CEST Pablo Neira Ayuso a =C3=A9cr=
it :
>=20
> nft add table inet filter
> nft add map inet filter mymap { type ipv4_addr . iface_index : verdict \;=
 }
> nft add element inet filter mymap { 172.18.0.0  . eth0 : accept }
> nft add rule inet filter forward ip saddr and 255.255.255.0 . iif vmap
> @mymap ^^^^^^^^^^^^^^^^^^^^^^^^^^
>=20
> The idea here is to mask the address, then add to the set the result
> of this operation, thus, 172.18.0.0

Very cool trick... Thanks. this solves 90% of what I want :)
This however implies the same mask for all networks, right?
Is is somehow possible to have one vmap for networks with different masks?

Thanks.