[153874] in North American Network Operators' Group
Re: IPv6 Lo. for 6PE/6VPE
daemon@ATHENA.MIT.EDU (Robert McKay)
Fri Jun 15 09:08:21 2012
To: <nanog@nanog.org>
Date: Fri, 15 Jun 2012 14:07:15 +0100
From: Robert McKay <robert@mckay.com>
In-Reply-To: <2811C7BC-3A02-4DF7-A1DC-933DB3C4537D@delong.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
You mean like this? ;)
1. ???
2. ldn-ipv6-b1.ipv6.telia.net
0.0% 3 1.0 1.2 1.0 1.4 0.2
3. cogent-ic-125507-ldn-b5.c.telia.net
0.0% 2 40.6 40.4 40.2 40.6 0.3
4. ::ffff:154.54.57.102
0.0% 2 129.1 129.1 129.1 129.1 0.0
5. ::ffff:154.54.30.129
0.0% 2 120.2 120.0 119.8 120.2 0.3
6. 2001:550::100
0.0% 2 120.2 120.3 120.2 120.5 0.2
7. ::ffff:154.54.5.253
0.0% 2 120.5 120.3 120.1 120.5 0.3
8. ???
9. cogentco.com
0.0% 2 119.9 119.9 119.9 119.9 0.0
Rob
On Fri, 15 Jun 2012 04:35:51 -0700, Owen DeLong wrote:
> If it does, that's bad... You should never see IPv4 mapped addresses
> on the wire.
> They should only be an internal representation of an IPv4 packet
> within the host.
>
> Owen
>
> On Jun 15, 2012, at 3:52 AM, Nagendra Kumar (naikumar) wrote:
>
>> Hi,
>>
>> Per my understanding, it is not required to have ipv6 address in
>> loopback intf on all P routers inorder to have 6PE work. If I remember
>> it correctly, P router will use ::FFFF::<ipv4-addr> while originating
>> ICMPv6 error message.
>>
>> -Nagendra
>>
>> -----Original Message-----
>> From: Daniel Roesen [mailto:dr@cluenet.de]
>> Sent: Friday, June 15, 2012 4:02 PM
>> To: nanog@nanog.org
>> Subject: Re: IPv6 Lo. for 6PE/6VPE
>>
>> On Fri, Jun 15, 2012 at 11:56:05AM +0200, mohamed Osama Saad Abo
>> sree wrote:
>>> I was just wondering , while I'm planning my network to support
>>> 6PE/6VPE why should i assign an IPv6 for Loopbacks?
>>>
>>> Maybe it's needed for Point-Point links or external interfaces
>>> between
>>> my peers, but anyone here know why i should assign IPv6 for all my
>>> Routers inside my ISP if we will run PE/6VPE not dual stack.
>>
>> Otherwise the intermediate P devices do not have an address to
>> source
>> ICMPv6 "hop count exceeded" error replies => traceroute doesn't work
>> properly.
>>
>> Best regards,
>> Daniel
>>
>> --
>> CLUE-RIPE -- Jabber: dr@cluenet.de -- dr@IRCnet -- PGP: 0xA85C8AA0
>>
