[Users] OpenVPN, IPTables, NAT Issues with UDP Translation after IP Change

Michael Flaig mflaig at googlemail.com
Fri Sep 16 16:51:25 EDT 2011


Hi,

it's a bit more complex issue here.
ppp0 is connected inside a VE and the issue is a bit deeper inside
ip_conntrack virtualization - I think.

I will open a Bug report for this soon.

On Fri, 2011-09-16 at 10:44 -0400, Sam Trenholme wrote:
>         I have a Debian host running multiple VEs and seeing trouble
>         with udp
>         translations (masq or snat) when the interface ip of ppp0
>         changes.
>         
> 
> 
> I didn't have time to read you entire message, but in my experience,
> OpenVZ's containers lose their network connectivity if anything
> happens to the host's IP.  To work around this, I have a script that
> does this to all running containers:
> 
> 
> vzctl set ${NUMBER} --ipdel ${IP_OF_CONTAINER}  
> vzctl set ${NUMBER} --ipadd ${IP_OF_CONTAINER}
> 
> 
> This resolves these kinds of issues:
> 
> 
> - Sam
> 
> 
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