Re: [Dots] WGLC on draft-ietf-dots-server-discovery-05

[<[e-mail]>]

Hi Tiru, 

I'm not sure this reference is needed. We do already cite 6125 to mention that CAs already issue certificates based on IP addresses. 

Cheers,
Med

> -----Message d'origine-----
> De : Konda, Tirumaleswar Reddy [mailto:[e-mail]]
> Envoyé : jeudi 7 novembre 2019 09:56
> À : BOUCADAIR Mohamed TGI/OLN; Jon Shallow; 'Valery Smyslov';
> [e-mail]; [e-mail]
> Objet : RE: [Dots] WGLC on draft-ietf-dots-server-discovery-05
> 
>    If the DHCP client receives OPTION_V6_DOTS_ADDRESS only, the
>    address(es) included in OPTION_V6_DOTS_ADDRESS are used to reach the
>    peer DOTS agent.  In addition, these addresses can be used as
>    identifiers for authentication.
> 
> We may want to add the following line to support the above lines:
> [I-D.ietf-acme-ip] describes a new protocol that allows CA to issue
> certificates for IP addresses.
> 
> Cheers,
> -Tiru
> 
> > -----Original Message-----
> > From: Dots <[e-mail]> On Behalf Of
> > [e-mail]
> > Sent: Thursday, November 7, 2019 12:19 PM
> > To: Jon Shallow <[e-mail]>; 'Valery Smyslov'
> > <[e-mail]>; [e-mail]; [e-mail]
> > Subject: Re: [Dots] WGLC on draft-ietf-dots-server-discovery-05
> >
> > CAUTION: External email. Do not click links or open attachments unless
> you
> > recognize the sender and know the content is safe.
> >
> > Hi Jon,
> >
> > OK, thanks.
> >
> > In order to further make things clear, I suggest to add this NEW text in
> the
> > introduction of Section 5:
> >
> >    The list of the IP addresses returned by DHCP servers is typically
> >    used to fed the DOTS server selection procedure detailed in
> >    Section 4.3 of [I-D.ietf-dots-signal-channel] or to provide DOTS
> >    agents with primary and backup IP addresses of their peer DOTS
> >    agents.
> >
> > Would that be OK?
> >
> > I'm not sure the text need to hint any priority order set by the server
> (backup
> > case), though. The reason is that list will be ordered by the client
> following HE.
> >
> > Cheers,
> > Med
> >
> > > -----Message d'origine-----
> > > De : Jon Shallow [mailto:[e-mail]]
> > > Envoyé : mercredi 6 novembre 2019 17:23 À : BOUCADAIR Mohamed
> > TGI/OLN;
> > > 'Valery Smyslov'; [e-mail]; dots- [e-mail] Objet : RE:
> > > [Dots] WGLC on draft-ietf-dots-server-discovery-05
> > >
> > > Hi Med,
> > >
> > > Sorry - not thinking straight - yes, you are correct in that a single
> > > OPTION_Vx_DOTS_ADDRESS can contain multiple IP addresses - must have
> > > glazed over the specific definition before hitting the "it MUST only
> > > use the first instance" in the next section (Client Behavior).
> > >
> > > Regards
> > >
> > > Jon
> > >
> > > > -----Original Message-----
> > > > From: Dots [mailto: [e-mail]] On Behalf Of
> > > [e-mail]
> > > > Sent: 06 November 2019 15:52
> > > > To: Jon Shallow; 'Valery Smyslov'; [e-mail];
> > > > [e-mail]
> > > > Subject: Re: [Dots] WGLC on draft-ietf-dots-server-discovery-05
> > > >
> > > > Hi Jon,
> > > >
> > > > Thank you for the comments.
> > > >
> > > > Please see inline.
> > > >
> > > > Cheers,
> > > > Med
> > > >
> > > > > -----Message d'origine-----
> > > > > De : Dots [mailto:[e-mail]] De la part de Jon Shallow
> > > > > Envoyé : mercredi 6 novembre 2019 15:59 À : 'Valery Smyslov';
> > > > > [e-mail]; [e-mail] Objet : Re: [Dots] WGLC on
> > > > > draft-ietf-dots-server-discovery-05
> > > > >
> > > > > Hi All,
> > > > >
> > > > > I have read through draft-ietf-dots-server-discovery-05 and think
> > > > > that
> > > it
> > > > > is
> > > > > a good document.
> > > > >
> > > > > However, in particular with DHCPv(4|6), it is only possible to use
> > > > > the first OPTION_Vx_DOTS_ADDRESS (5.1.3, 5.2.3).
> > > >
> > > > [Med] Yes
> > > >
> > > >   If the server at the first address
> > > > > is down / unavailable for whatever reason, it is not possible to
> > > > > define
> > > a
> > > > > backup IP address as a secondary entry.  Is it the intention to
> > > > > not
> > > allow
> > > > > backup IP addresses?
> > > >
> > > > [Med] Hmm, that is possible given that an instance is designed to
> > > > carry a
> > > list
> > > > of IP addresses.
> > > >
> > > >    If the DHCP client receives OPTION_V6_DOTS_ADDRESS only, the
> > > >    address(es) included in OPTION_V6_DOTS_ADDRESS are used to reach
> > the
> > > >    ^^^^^^^^^^
> > > >    peer DOTS agent.  In addition, these addresses can be used as
> > > >    identifiers for authentication.
> > > >
> > > > >
> > > > > With DNS, I know that A/AAAA records can be presented round-robin
> > > > which
> > > > > gives the possibility of backup IP addresses, but am not sure
> > > > > whether
> > > this
> > > > > holds true for implementations for other Resource Records.  If
> > > > > backup addresses are to be allowed, the draft is unclear whether
> > > > > only the
> > > first
> > > > > A/AAAA RR is allowed, or each can be tested until the first
> > > > > non-failure
> > > is
> > > > > found, or whether happy-eyeballs it to be invoked against all of
> > > > > the IP addresses and then the final IP preferentially chosen
> > > > > according to the
> > > RR
> > > > > returned order.
> > > >
> > > > [Med] Considerations related to address selection (including HE) are
> > > > not detailed here on purpose because this is not part of discovery.
> > > >
> > > > >
> > > > > Regards
> > > > >
> > > > > Jon
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Dots [mailto:[e-mail]] On Behalf
> > > > > > Of
> > > > Valery
> > > > > > Smyslov
> > > > > > Sent: 23 October 2019 08:37
> > > > > > To: [e-mail]
> > > > > > Cc: [e-mail]
> > > > > > Subject: [Dots] WGLC on draft-ietf-dots-server-discovery-05
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > this message starts a Work Group Last Call (WGLC) for
> > > > > draft-ietf-dots-server-
> > > > > > discovery-05.
> > > > > > The version to be reviewed is here:
> > > > > https://www.ietf.org/id/draft-ietf-dots-
> > > > > > server-discovery-05.txt
> > > > > >
> > > > > > The WGLC will last for two weeks and will end on November the
> 7th.
> > > > > > Please send your comments to the list before this date.
> > > > > >
> > > > > > Regards,
> > > > > > Frank & Valery.
> > > > > >
> > > > > >
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