On 5/29/13 10:59 AM, Bless, Roland (TM) wrote:
Hi Brian,
Am 29.05.2013 15:00, schrieb Brian Haberman:
On 5/29/13 8:46 AM, Bless, Roland (TM) wrote:
I'm not sure that your statement is fully correct.
Though I'm convinced that ND provides many useful
features, in specific environments and rare cases
the use of ND may be problematic (due to security
or "performance" reasons).
The IPv6 spec luckily doesn't require that a node MUST
use ND. If you create static permanent Neighbor Cache
entries and switch off NUD, there is no need to perform
ND (sacrificing flexibility and some robustness).
I am not sure which IPv6 spec you are talking about. The Node
Requirements RFC, especially section 5.2, is the definitive guide to
what is (and isn't) required...
https://tools.ietf.org/html/rfc6434#section-5.2
I was referring to RFC 2460. RFC 6434 states
ND SHOULD be supported, which makes perfectly sense.
In very rare cases you may not be able to use ND
(e.g., if you have a unidirectional medium etc.).
But there are MUSTs sprinkled in that section as well...
Regards,
Brian
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