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Re: [Idr] draft-walton-bgp-hostname-capability-00

Dinesh Dutt <ddutt@cumulusnetworks.com> Sun, 17 May 2015 12:07 UTC

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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sun, 17 May 2015 05:07:15 -0700
Message-ID: <CABg5FUVqOXkmzjGWZkmQ8BT63SU+kKY-z2bwpPOZcDZM_fi5Kw@mail.gmail.com>
To: Thomas Mangin <thomas.mangin@exa-networks.co.uk>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sun, May 17, 2015 at 3:00 AM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

>
>
> http://exa.net.uk/about/contact-us
> On 17 May 2015, at 10:24, Randy Bush wrote:
>
> >>> and we're all waiting for the attack where the sender puts tasty
> >>> things in the supposed dns name
> >> If the worry is about the complexity of handling UTF-8, the draft
> >> could be change to require ascii 'a' through 'z' (in a
> >> case-insensitive manner), the digits '0' through '9', and the hyphen
> >> ('-') to be put in the draft as it is what DNS allows.
> >
> > bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
> > on hostnames, the leftmost chunk of the lhs at most.
>
> I stand corrected.
> That said, then perhaps the way is to only pass the hostname and not the
> fqdn.
>

That'll be fine. We added fqdn to allow for cases outside the DC.

On a different note, OSPF has a far more involved modification to allow the
carrying of hostnames (https://tools.ietf.org/html/rfc5642). I'm curious as
to why that was considered OK.

Dinesh

>
> Thomas
>
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