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From: Jamie Lokier <jamie@shareable.org>
To: John Haxby <john.haxby@oracle.com>
Cc: qemu-devel@nongnu.org, "Richard W.M. Jones" <rjones@redhat.com>,
	Avi Kivity <avi@redhat.com>, David Ahern <dsahern@gmail.com>
Subject: Re: [Qemu-devel] PATCH: enabling TCP keepalives - v3
Date: Tue, 5 May 2009 02:35:21 +0100	[thread overview]
Message-ID: <20090505013521.GC12731@shareable.org> (raw)
In-Reply-To: <49FB1F3C.8080805@oracle.com>

John Haxby wrote:
> Connection tracking devices often have a 10 minute timeout for idle 
> connections -- the connection will magically evaporate after 600s of 
> idle time.

Oh if only.  I've seen NATs which expire after about 20 seconds.  My
VPN is configured to send NAT-keepalive pings every 15 seconds because
of that.

> For those people that have seriously dodgy VPN connections that no 
> amount of keepalive will keep up, they need some alternative.   Probably 
> starting with a new VPN :-)

Interesting perspective on VPNs.  I use a VPN sometimes because it's
more stable than the underlying network and keeps TCP connections
going where the underlying network would not :-)

-- Jamie

  reply	other threads:[~2009-05-05  1:35 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-30 19:40 [Qemu-devel] PATCH: enabling TCP keepalives - v3 David Ahern
2009-05-01 11:32 ` Richard W.M. Jones
2009-05-01 12:23   ` Jamie Lokier
2009-05-01 12:49   ` David Ahern
2009-05-01 15:23     ` Daniel P. Berrange
2009-05-01 15:47       ` David Ahern
2009-05-01 17:21         ` Richard W.M. Jones
2009-05-05  1:31         ` Jamie Lokier
2009-05-05  2:59           ` David Ahern
2009-05-01 15:52       ` Avi Kivity
2009-05-01 16:11         ` John Haxby
2009-05-05  1:35           ` Jamie Lokier [this message]
2009-05-01 14:43 ` Anthony Liguori
2009-05-01 14:47   ` David Ahern
2009-05-01 14:51     ` Anthony Liguori
2009-05-01 15:16       ` Paul Brook
2009-05-01 15:57         ` Anthony Liguori
2009-05-01 16:04           ` Paul Brook
2009-05-01 16:11             ` David Ahern

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