[101276] in North American Network Operators' Group
Re: v6 subnet size for DSL & leased line customers
daemon@ATHENA.MIT.EDU (Florian Weimer)
Wed Dec 26 11:40:09 2007
From: Florian Weimer <fw@deneb.enyo.de>
To: North American Network Operators Group <nanog@merit.edu>
Date: Wed, 26 Dec 2007 17:31:22 +0100
In-Reply-To: <20071226162602.GB57794@ussenterprise.ufp.org> (Leo Bicknell's
message of "Wed, 26 Dec 2007 11:26:03 -0500")
Errors-To: owner-nanog@merit.edu
* 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.
