Re: [dhcwg] Call for adoption: draft-sun-dhc-port-set-option

Hi Ole,

> if this proposal is also advocating a contiguous mask, then I don't understand why you cannot use the proposal in draft-ietf-softwire-map?

The proposal in draft-ietf-softwire-map includes case of  allocating non-contiguous port-sets to a CE. Non-contiguous port-set can't make it harder to guess the port, with extra effort for implementation.  A contiguous port-set is enough and can be achieved easily.

Thanks,

Qi Sun

On 2012-10-18, at 下午10:00, Ole Trøan wrote:

>> This draft does proposed a contiguous mask to allocate contiguous port-set. And the draft is a merged version of 
>> draft-wu-dhc-port-set-option-00 and draft-bajko-pripaddrassign-04. The authors have reached the consensus to use mask for contiguous port-set allocation, which is easy to implement both for client and server.
> 
> if this proposal is also advocating a contiguous mask, then I don't understand why you cannot use the proposal in draft-ietf-softwire-map?
> 
> cheers,
> Ole
> 
>>>>> without a "larger context" (i.e. some sort of encapsulation, how is that supposed to work? think ARP.
>>>> 
>>>> Just to be clear here, the DHC working group is not proposing to work on defining a way to share IP addresses.   The DHC working group is proposing to work on a way to convey a port range to a device which shares IP addresses, using DHCP.   Anything more than that would definitely be out of scope for DHC.
>>>> 
>>>> BTW, we discussed using port ranges versus using masks; the reason for using masks is that it's easier to do on the fast path than ranges.
>>> 
>>> right. draft-ietf-softwire-map uses a mask. you propose support for a  discontiguous mask, our proposal a contiguous one. anyhow, let us move this to softwire.
>>> 
>>> cheers,
>>> Ole
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>>> dhcwg@ietf.org
>>> https://www.ietf.org/mailman/listinfo/dhcwg
>> 
> 
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