> I don't know whether or not this is an issue with your ISP arp cache.
> However, when I did a firewall machine upgrade, I called my ISP and they
> flushed the arp cache manually. This was a Very Good Thing - without
> it, I would have had to wait hours...
> It can be done, if they are helpful.
My ISP said that proxy ARP was disabled in their Cisco router. They
enabled it and after waiting appx. 3 hours everything seems to work now. I
was just that it is a production environment and waiting for 3 hour seems
But this brings the question whether or not you should also be able to use
"real IP addresses" instead of proxy arping. Manuel: is there a reason why
you couldn't have both possibilities?