Re: [Qemu-devel] PATCH: enabling TCP keepalives - v3

[Jamie Lokier]

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