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Re: [Openvpn-users] tunnel stops working - write to UDP: Invalid argument (errno=22)


  • Subject: Re: [Openvpn-users] tunnel stops working - write to UDP: Invalid argument (errno=22)
  • From: rob <rapodaca@xxxxxxxxxxxxxxxxxxxxx>
  • Date: Mon, 29 Sep 2003 14:58:48 -0400

On Mon, 15 Sep 2003 08:49:37 -0400
rob <rapodaca@xxxxxxxxxxxxxxxxxxxxx> wrote:

> write to UDP: Invalid argument (errno=22)

> I have set up a tunnel between a T-1 and a DSL account. The tunnel has stopped working two times.
> I turned up logging after the first time. The only strangeness I see is the above error. Normally
> the logs say 'write to UDP returned 60' or similar. While the tunnel is not working, it 'appears'
> to be up and running but no traffic can be sent across. What I mean by 'appears' is that the tun
> device is up, the service is running, netstat reports that the service is listening on 5000,
> and the route appears in the route table.
> 

For the archives:
This ended up being a problem with my firewall configuration on the DSL connection.
I failed to set CLAMPMSS to 'yes' in the shorewall.conf file.
Setting it to yes solved the problem.

-- 
rob apodaca

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