netdev - Re: Connection tracking and vlan

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Message-ID: <4AEB06E6.6020206@gmail.com>
Date:	Fri, 30 Oct 2009 16:31:50 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
CC:	Adayadil Thomas <adayadil.thomas@...il.com>,
	netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>
Subject: Re: Connection tracking and vlan

Herbert Xu a écrit :
> Adayadil Thomas <adayadil.thomas@...il.com> wrote:
>> If two connections have same 5 tuple, src ip, dst ip, src port, dst
>> port, protocol(tcp/udp)
>> but on different vlans (different vlan id), does the conntrack separate these ?
> 
> Probably not.  Patrick, can you confirm this?
> 

Very strange, this question about vlan looks like discussion we had
yesterday (or the day before...) about interfaces (versus packet defragmentation)

"IP conntracking" is about IP, and [V]LAN doesnt matter at all at this protocol level.

Same thing if you have two interfaces, eth0 & eth1 : IP conntrack tuples dont
include interface name/index

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