multiple prefixes

Frank Bulk frnkblk at
Sat Feb 9 21:01:56 CET 2013

They aren't configured differently for me -- SLAAC, both publicly routable.


-----Original Message-----
From: David Magda [mailto:dmagda at] 
Sent: Saturday, February 09, 2013 1:49 PM
To: Frank Bulk
Cc: ipv6-ops at
Subject: Re: multiple prefixes

On Feb 9, 2013, at 14:25, Frank Bulk wrote:

> I happen to be using two /64's in one non-end user VLAN and I've had no
> issues thus far.

Are you using SLAAC, DHCPv6, or a combination of the two? Are both prefixes
publicly routable?

I certainly know that it's doable, I'm more curious to know how much the two
can differ (ULA, PD, PI, privacy, etc.). I'm looking into using two prefixes
because of the privacy options ($WORK is health care, so some data is highly
sensitive), but there may be other reasons to use two prefixes.

In the IPv4 world order most machines have one address per NIC, so the whole
multiple addresses way of thinking is probably novel to most folks.

More information about the ipv6-ops mailing list