On Tue, May 31, 2016 at 9:35 AM, Tom Dunstan <[email protected]> wrote:
>
>> On 31 May 2016, at 2:07 AM, Tom Lane <[email protected]> wrote:
>>
>> The impression I have is that scopes are not very well standardized ---
>> eg, OS X reports things like "fe80::1%lo0" not just "%0". If we could
>> get around that problem it would be worth doing.
The following is the content of IPV6 representation from RFC 4007
The following addresses
fe80::1234 (on the 1st link of the node)
ff02::5678 (on the 5th link of the node)
ff08::9abc (on the 10th organization of the node)
would be represented as follows:
fe80::1234%1
ff02::5678%5
ff08::9abc%10
(Here we assume a natural translation from a zone index to the
<zone_id> part, where the Nth zone of any scope is translated into
"N".)
If we use interface names as <zone_id>, those addresses could also be
represented as follows:
fe80::1234%ne0
ff02::5678%pvc1.3
ff08::9abc%interface10
The digit and string both are considered as proper format.
>
> Yeah, we’d have to just store it as a string I think. That’s why I was happy
> to see that inet was already a varlena but only with known-length content.
The % delimiter character is not only used at the end of the IPV6 address,
from the RFC document, it is possible as follows also.
fe80::%2/64
we need to handle both the scenarios, it may not be a straight
forward to store the zone id data.
Regards,
Hari Babu
Fujitsu Australia
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