[cifs-protocol] [MS-ADTS] 6.1.1.2.2.2.1 Subnet Object address range [REG:116011913603795]
Douglas Bagnall
douglas.bagnall at catalyst.net.nz
Wed Jan 27 22:57:00 UTC 2016
hi Jeff,
Yes, I understand now.
thanks,
Douglas
On 28/01/16 09:14, Jeff McCashland wrote:
> Hi Douglas,
>
> I believe that agrees with RFC 5952, which is referenced by [MS-ADTS] (updated per the previous issue) to define the canonical format.
>
> 5. Text Representation of Special Addresses
> Addresses such as IPv4-Mapped IPv6 addresses, ISATAP [RFC5214], and
> IPv4-translatable addresses [ADDR-FORMAT] have IPv4 addresses
> embedded in the low-order 32 bits of the address. These addresses
> have a special representation that may mix hexadecimal and dot
> decimal notations. The decimal notation may be used only for the
> last 32 bits of the address. For these addresses, mixed notation is
> RECOMMENDED if the following condition is met: the address can be
> distinguished as having IPv4 addresses embedded in the lower 32 bits
> solely from the address field through the use of a well-known prefix.
> Such prefixes are defined in [RFC4291] and [RFC2765] at the time of
> this writing. If it is known by some external method that a given
> prefix is used to embed IPv4, it MAY be represented as mixed
> notation. Tools that provide options to specify prefixes that are
> (or are not) to be represented as mixed notation may be useful.
>
> The address range you're referring to falls in this category:
> " mixed notation is
> RECOMMENDED if the following condition is met: the address can be
> distinguished as having IPv4 addresses embedded in the lower 32 bits
> solely from the address field through the use of a well-known prefix."
>
> So it is appropriate to use mixed notation with the well-known prefix 0:0:0:0:0:FFFF.
>
> Does that answer the question?
>
> If not, could you let me know what tool you're using and the steps for creating subnets over LDAP? I'm not sure how to do that.
>
> Best regards,
> Jeff McCashland | Senior Escalation Engineer | Microsoft Protocol Open Specifications Team
> Phone: +1 (425) 703-8300 x38300 | Hours: 9am-5pm | Time zone: (UTC-08:00) Pacific Time (US and Canada)
> Local country phone number found here: http://support.microsoft.com/globalenglish | Extension 1138300
> We value your feedback. My manager is Nam Su Kang (nkang), +1 (980) 776-7499
>
> -----Original Message-----
> From: Douglas Bagnall [mailto:douglas.bagnall at catalyst.net.nz]
> Sent: Tuesday, January 26, 2016 1:33 PM
> To: Jeff McCashland <jeffm at microsoft.com>
> Cc: cifs-protocol at lists.samba.org; MSSolve Case Email <casemail at microsoft.com>
> Subject: Re: [MS-ADTS] 6.1.1.2.2.2.1 Subnet Object address range [REG:116011913603795]
>
> Hi Jeff,
>> As I understand now, you're able to create subnets using other IPv4-Mapped addresses in addition to "::FFFF:0:0/nn"?
>
> Yes, if I use the mixed form "::FFFF:1.2.3.4/nn" rather than the pure
> IPv6 "::FFFF:12:34/nn".
>
> cheers,
> Douglas
>
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