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Date:	Mon, 09 Feb 2015 18:45:31 -0800 (PST)
From:	David Miller <>
Subject: Re: [PATCHv2 net-next] ipv4: Namespecify TCP PMTU mechanism

From: Fan Du <>
Date: Tue, 10 Feb 2015 09:53:16 +0800

> Packetization Layer Path MTU Discovery works separately beside
> Path MTU Discovery at IP level, different net namespace has
> various requirements on which one to chose, e.g., a virutalized
> container instance would require TCP PMTU to probe an usable
> effective mtu for underlying tunnel, while the host would
> employ classical ICMP based PMTU to function.
> Hence making TCP PMTU mechanism per net namespace to decouple
> two functionality. Furthermore the probe base MSS should also
> be configured separately for each namespace.
> Signed-off-by: Fan Du <>

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