[153895] in North American Network Operators' Group
Re: IPv6 Lo. for 6PE/6VPE
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Jun 15 16:06:15 2012
From: Owen DeLong <owen@delong.com>
In-Reply-To: <ee415e6138919ce278ae5c927c020696@webmail.mckay.com>
Date: Fri, 15 Jun 2012 13:03:56 -0700
To: Robert McKay <robert@mckay.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Yes... That shouldn't happen.
Whoever is responsible for the routers at 154.54.{57.102,30.129,5.253} =
should fix their configurations.
Owen
On Jun 15, 2012, at 6:07 AM, Robert McKay wrote:
> You mean like this? ;)
>=20
> 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
>=20
> Rob
>=20
> 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.
>>=20
>> Owen
>>=20
>> On Jun 15, 2012, at 3:52 AM, Nagendra Kumar (naikumar) wrote:
>>=20
>>> Hi,
>>>=20
>>> 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.
>>>=20
>>> -Nagendra
>>>=20
>>> -----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
>>>=20
>>> 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?
>>>>=20
>>>> 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.
>>>=20
>>> Otherwise the intermediate P devices do not have an address to =
source
>>> ICMPv6 "hop count exceeded" error replies =3D> traceroute doesn't =
work properly.
>>>=20
>>> Best regards,
>>> Daniel
>>>=20
>>> --
>>> CLUE-RIPE -- Jabber: dr@cluenet.de -- dr@IRCnet -- PGP: 0xA85C8AA0
>>>=20
>=20
