On 4/25/07, Tang Tse <openmisc@gmail.com> wrote:
quoted text
> Hi,
>
> I'm playing around with carp and routers. My scenario is the next:
>
> One ISP address ( for exemple: 10.2.2.1 )
> Two openbsd 4.0 machines with 3 NICs
> Lan switch
>
> On LAN side, i set one NIC on every machine with private ip:
> Machine#1: 192.168.0.20
> Machine#2: 192.168.0.21
> And they share a virtual address: 192.168.0.30
>
> The carp nics between both machines with 10.0.0.1 and 10.0.0.2
>
> And my question is for ISP side:
> I got only one IP address, 10.2.2.1, how do share it? I mean, i can't set up
> other 2 new IPs like 10.2.2.2 and .3.. any suggestion?

Tang, this is covered in the FAQ:

http://www.openbsd.org/faq/pf/carp.html

The section titled 'Combining CARP and pfsync For Failover' addresses
your question.

-Todd