On Apr 11, 2005 9:18 AM, Roman Kuznetsov <rk at systola dot de> wrote:
> > >
> >
> > It may be the ARP cache on your ISPs routers - some ISPs have
> > unreasonably long TTLs on their ARP caches. If this is the
> > case you will just have to wait for the cache to expire.
> >
> > Or you may also need to add the additional IPs to ARP Proxy (Services
> > -> Proxy ARP).
> 
> Well, it says "you do not need Proxy ARP in most cases".
> And I do not think it has to do with ARP at all:
> I added an alias with ifconfig through /exec.php and it started working
> immediately.
> But, of course, it will be gone after restart.
> So something is not quite right there with that additional IPs on WAN.
> 

And it's proxy ARP, James is right.  Add it.  

-Chris