IPv6 network policies

[Ole Troan]

Mark,

>>> It's well known that the pong pong problem doesn't exist if ND
>>> NS/NAs are used.
>> 
>> I presume by saying "NS/NA", you mean the address resolution function of ND.
>> see section 7.2:
>> 
>>   "Address resolution is the process through which a node determines the
>>   link-layer address of a neighbor given only its IP address.  Address
>>   resolution is performed only on addresses that are determined to be
>>   on-link and for which the sender does not know the corresponding
>>   link-layer address (see Section 5.2).  Address resolution is never
>>   performed on multicast addresses."
>> 
>> in particular see "does not know the corresponding link-layer address".
>> 
> 
> I don't agree, because I would consider knowing a link layer address
> doesn't exist (verified by the absence of a NA in response to an NS) as
> significantly different from assuming it exists, which is your
> position. The latter position is what is causing the ping-pong problem.

where do you get the idea that there are any assumptions made?
the link has no link-layer addresses. there is nothing to resolve. you don't need to send an NS to figure that out, it is a property of the link type.

I don't think we'll get much further in this discussion, so lets end it here or take it off-list.

/ot