Re: v6 subnet size for DSL & leased line customers

[Florian Weimer <fw () deneb enyo de>]

* Leo Bicknell:

> In a message written on Tue, Dec 25, 2007 at 12:43:45AM -0500, Kevin Loch wrote:
> > RA is a shotgun.  All hosts on a segment get the same gateway.  I have 
> > no idea what a host on multiple segments with different gateways would 
> > do.  Hosting environments can get complex thanks to customer
>
> I would like to point out that in IPv4 we have ICMP Router
> Advertisement messages.  I have never seen them used on a production
> network.  I know one of the worries is security, that a compromised host
> could send out advertisements, drawing traffic to it that it can then
> snoop and pass on to the real gateway.

DHCP and ARP face the same issue.  That's why "one host per subnet" is
so appealing.