nanog mailing list archives

Re: Using IPv6 with prefixes shorter than a /64 on a LAN


From: Douglas Otis <dotis () mail-abuse org>
Date: Mon, 24 Jan 2011 15:42:28 -0800

On 1/24/11 11:04 AM, bmanning () vacation karoshi com wrote:
  well... you are correct - he did say shorter.  me - i'd hollar for my good
friends Fred and Radia (helped w/ the old vitalink mess) on the best way to
manage an arp storm and/or cam table of  a /64 of MAC addresses. :)  It was
hard enough to manage a "lan"/single broadcast domain that was global in scope
and had 300,000 devices on it.

"route when you can, bridge when you must"
Bill,

It seems efforts related to IP address specific policies are likely doomed by the sheer size of the address space, and to be pedantic, ARP has been replaced with multicast neighbor discovery which dramatically reduces the overall traffic involved. Secondly, doesn't Secure Neighbor Discovery implemented at layer 2 fully mitigate these issues? I too would be interested in hearing from Radia and Fred.

-Doug



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