Re: [v4v6interim] Dynamic Host Configuration Protocol (DHCP) Options for Port Restricted IP Address Assignment

Iljitsch van Beijnum   (m/j/a) 9/29/08 12:36 PM:
> On 26 sep 2008, at 7:48, <teemu.savolainen@nokia.com> 
> <teemu.savolainen@nokia.com> wrote:
> 
>>   This document defines two Dynamic Host Configuration Protocol for
>>   IPv4 [RFC2131] options that allow servers to assign port restricted
>>   IPv4 addresses to clients. Port restriction may be necessary in
>>   cases when one public IPv4 address is assigned to multiple clients
>>   because of scarcity of the available IPv4 addresses.
> 
>> Comments are welcome.
> 
> Although slicing an IPv4 address into pieces by port range could be 
> useful, I think this is more trouble than it's worth, because any 
> protocol that needs a "full" IPv4 address to function is going to break. 
> This includes ARP. Now you can of course define this to be only used on 
> networks that don't have ARP, but I still think it's too dangerous.

In the SAM proposal of 
http://www.ietf.org/internet-drafts/draft-despres-sam-scenarios-00.txt, 
port restricted IPv4 packets are encapsulated in local addressing packets.
ARP works as usual on encapsulating packets.

I will present it in Montreal (APBP-Revised item of the agenda).

Regards.

RD
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