On Sat, Oct 17, 2009 at 8:55 PM, Ray Soucy <rps@maine.edu> wrote:
As it turns out delivering IPv6 to the edge in an academic setting has been a challenge. Common wisdom says to rely on SLAAC for IPv6 addressing, and in a perfect world it would make sense.
Ray, Common wisdom says that?
Our current IPv6 allocation schema provides for a 64-bit prefix for each network. Unfortunately, this enables SLAAC; yes, you can suppress the prefix advertisement, and set the M and O flags, but that only prevents hosts that have proper implementations of IPv6 from making use of SLAAC. The concern here is that older hosts with less than OK implementations will still enable IPv6 without regard for the stability and security concerns associated with IPv6.
I thought someone had to respond to router solicitations for stateless autoconfig of global scope addresses to happen. On Linux you just don't run the radvd. On Cisco I think it's something like "ipv6 nd suppress-ra" in the interface config. Does that fail to prevent stateless autoconfig? Or is there a problem with the operation of DHCPv6 if router advertisements aren't happening from the router? Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004