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Date:      Tue, 26 Nov 2019 20:43:01 +0000
From:      Unix Codenetworks <unix@ssbglimited.co.uk>
To:        "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>
Cc:        freebsd-net@freebsd.org
Subject:   Re: SRv6 in FreeBSD
Message-ID:  <4eedc700-0bfd-0bb7-fa74-2ad6c16cd359@ssbglimited.co.uk>
In-Reply-To: <201911262020.xAQKKDA0004315@gndrsh.dnsmgr.net>
References:  <201911262020.xAQKKDA0004315@gndrsh.dnsmgr.net>

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Hey, no prob.. sure lets wait to hear back on the use case that could be 
interesting :)


On 2019-11-26 20:20, Rodney W. Grimes wrote:
>> Hi Rodney,
>>
>> I haven't said that is not approved or an RFC exist (there are many and some interesting use cases) , but can you tell me of any in production deployments?
> I can not, though for the SRH to be in its current state as a "Standards Track" document
> there must be running code someplace... and that usually implies production deployments
> as well, or atleast not small scale tests.
>
>> The conservatory still there, if you check with your customer, how many are willing to deploy it?
> I did not mention any customer(s) at all, I stated I was interested in any use case.
>
>> Open for an offline talk about it as i really like to know if you are seeing other thing..
> I do not know that there is much to talk about.
>
>> Best regards.
>>
>> Santiago
>>
>>
>>
>> On 2019-11-26 11:33, Rodney W. Grimes wrote:
>>
>>>> Hi Alex,
>>>>
>>>> While I'm not a BSD developer, i really doubt it, considering that the
>>>> building blocks for SR are not there ( mpls support or just label
>>>> push/pop/swap).
>>> He specifically stated SRv6 which is not MPLS based.
>>> The building blocsk if one was to need this in a BSD are in
>>> OpenBSD which has an MPLS implementation.
>>>
>>>> On the other hand, on SRv6 as you mentioned you rely on IPv6 headers and
>>>> there is a lot of conservatory about it.... ( unless you are a Cisco fan!)
>>> :-)  The SRH is 5 years and 26 revisions into the process and has
>>> been  "Submitted to IESG for Publication" per:
>>> https://datatracker.ietf.org/doc/draft-ietf-6man-segment-routing-header/
>>> so it should be possible for someone to do an implementation in FreeBSD
>>>
>>>> I'm interesting on the use case, if you don't mind... is it just service
>>>> chaining you application ? Usually servers are just part of an overlay (
>>>> call it VXLAN,? MPLS? or something over something else...)
>>> I would be interested to here the use cases as well.
>>>
>>>> Best regards.
>>>>
>>>> Santiago
>>>>
>>>>
>>>> On 2019-11-25 03:43, madhava gaikwad via freebsd-net wrote:
>>>>> Hello Experts,
>>>>> I want to know if there is any effort/planning going on to implement Segment Routing (RFC 8402?https://tools.ietf.org/html/rfc8402). I see Linux supporting it. Wondering if there is something planned on FreeBSD too.My app runs on FreeBSD and I have a use case to share information from one application gateway to another about connection identity. I thought SRv6 header can help me here.
>>>>> Thank you.Alex.
>>>>> _______________________________________________
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