Re: [Captive-portals] option 160 conflict
Erik Kline <ek@loon.com> Sat, 11 January 2020 00:12 UTC
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From: Erik Kline <ek@loon.com>
Date: Fri, 10 Jan 2020 16:12:31 -0800
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To: Warren Kumari <warren@kumari.net>
Cc: Tommy Pauly <tpauly@apple.com>, "Bernie Volz (volz)" <volz@cisco.com>, Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org>, Michael Richardson <mcr+ietf@sandelman.ca>, "captive-portals@ietf.org" <captive-portals@ietf.org>
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Subject: Re: [Captive-portals] option 160 conflict
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sounds good. I'll patch that in and upload a -01. On Fri, 10 Jan 2020 at 16:00, Warren Kumari <warren@kumari.net> wrote: > > > On Fri, Jan 10, 2020 at 12:19 PM Tommy Pauly <tpauly@apple.com> wrote: > > > > > > > > On Jan 2, 2020, at 6:24 PM, Erik Kline <ek@loon.com> wrote: > > > > 111 or 114 pending approval from Apple both seem fine to me. > > > > > > As far as approval, I checked with Dieter who originally registered it, > and it's fine to use. So, Apple gives approval! > > > > > > I'll add an Appendix C with a brief summary of the 160 polycom > experience for posterity. > > > > > > Sounds good. And do we just need to update the IANA Considerations to > ask for 114? > > Yup. > > I'd think that adding something like the below to the IANA Considerations > section would work: > > > [RFC Ed: Please remove before publication: > RFC7710 uses DHCP Code 160 -- unfortunately, it was discovered that this > option code is already widely used by Polycom (see Appendix C). > Option 114 (URL) is currently assigned to Apple (RFC3679, Section 3.2.3 - > Contact: Dieter Siegmund, dieter@apple.com - Reason to recover: Never > published in an RFC) > Tommy Pauly (Apple) and Dieter Siegmund confirm that this codepoint hasn't > been used, and Apple would like to relinquish it for use in CAPPORT. > Please see thread: > https://mailarchive.ietf.org/arch/msg/captive-portals/TmqQz6Ma_fznD3XbhwkH9m2dB28 > for more background ] > > The IANA is requested to update the "BOOTP Vendor Extensions and DHCP > Options" registry ( > https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml) > to: > Tag: 114 > Name: DHCP Captive-Portal > Length: N > Meaning: DHCP Captive-Portal > Reference: [THIS-RFC] > > Tag: 160 > Name: REMOVED/Unassigned > Length: > Meaning: > Reference: [RFC7710][Deprecated]. > > —— > Seeing as this is an unusual case, I’ll ask the IANA / Michele nicely how > this should best be worded / explain the background / ask nicely... > > W > > > > > > > Best, > > Tommy > > > > > > On Thu, 2 Jan 2020 at 14:33, Warren Kumari <warren@kumari.net> wrote: > >> > >> On Thu, Jan 2, 2020 at 2:29 PM Tommy Pauly <tpauly@apple.com> wrote: > >> > > >> > One option we have is to use Code 114, which was reserved for use by > Apple as a "URL" option. That particular codepoint wasn't ever used, so it > should be open to be reclaimed as a CAPPORT API URL. Since this is in the > range below 128, it should be safer to use. > >> > >> > >> I *really* like this idea - the options even contains something that > >> looks like a URL :-) > >> > >> Is there any reason *not* to reuse this? There is a note in RFC 3679 > >> (Unused DHCP Option Codes) saying: > >> > >> Code: 114 > >> Name: URL > >> Defined in: (none) > >> Contact: Dieter Siegmund, dieter@apple.com > >> Reason to recover: Never published in an RFC > >> > >> If this does get resulted for CAPPORT, should we file a Hold For > >> Document Update errata noting that this is no longer true? > >> > >> Thank you Tommy! > >> W > >> > >> > >> > > >> > Best, > >> > Tommy > >> > > >> > On Dec 23, 2019, at 11:27 AM, Bernie Volz (volz) <volz@cisco.com> > wrote: > >> > > >> > Hi: > >> > > >> > OK, good to know. I had thought that there was support for using > option 160 in implementations as RFC7710 was published in December 2015. > >> > > >> > I guess Warren will need to update the bis document to request IANA > to assign a new DHCPv4 option (replacing 160) because of the potential > conflict regarding its use – likely it would be useful to give some short > justification for this (about the conflict). Likely the listing for option > 160 will need to be something like: > >> > > >> > 160 DEPRECATED (see new-option-code) - DHCP Captive-Portal > N DHCP Captive-Portal [RFC7710] > >> > 160 Polycom (vendor specific) > >> > > >> > It may also be appropriate to request IANA assign 111 (if still > available) as it has no reported use and is in the original (<128) IANA > assigned space (as per RFC2132). > >> > > >> > BTW: Code 115 (which was listed as used by failover in RFC3679) could > also be a good choice as I am pretty sure it this was ever used (and if it > was, it was for failover communication and not normal clients; and that use > has long been deprecated). > >> > > >> > > >> > Bernie > >> > > >> > > >> > From: tpauly@apple.com <tpauly@apple.com> > >> > Sent: Monday, December 23, 2019 12:58 PM > >> > To: Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org> > >> > Cc: Bernie Volz (volz) <volz@cisco.com>; Michael Richardson < > mcr+ietf@sandelman.ca>; captive-portals@ietf.org; Warren Kumari < > warren@kumari.net> > >> > Subject: Re: [Captive-portals] option 160 conflict > >> > > >> > > >> > > >> > > >> > On Dec 21, 2019, at 7:48 PM, Lorenzo Colitti <lorenzo= > 40google.com@dmarc.ietf.org> wrote: > >> > > >> > > >> > On Sat, 21 Dec 2019, 07:53 Bernie Volz (volz), <volz@cisco.com> > wrote: > >> > > >> > 1) It would not really remove the overlap for a long while (until all > of the clients that used the "old" 160 Capport option are upgraded). So, > devices will still need to deal with it for a long while. > >> > > >> > > >> > Do any clients or networks actually implement 160 to mean capport? I > know that iOS and Android, which seem most interested in this option, do > not yet. > >> > > >> > > >> > I am not aware of anything using the option yet. iOS does not use it; > we used it for interop testing, but that is not in production code. > >> > > >> > > >> > If they do not, the right thing to do would be to get a new option > code, and do so as soon as possible so the implementations that are being > written this year can immediately start using the new one. > >> > > >> > > >> > I would also urge that if we want a new code, we allocate it soon so > that the implementations can quickly test it out and ship the right value. > >> > > >> > Tommy > >> > > >> > > >> > _______________________________________________ > >> > Captive-portals mailing list > >> > Captive-portals@ietf.org > >> > https://www.ietf.org/mailman/listinfo/captive-portals > >> > > >> > > >> > >> > >> -- > >> I don't think the execution is relevant when it was obviously a bad > >> idea in the first place. > >> This is like putting rabid weasels in your pants, and later expressing > >> regret at having chosen those particular rabid weasels and that pair > >> of pants. > >> ---maf > >> > >> _______________________________________________ > >> Captive-portals mailing list > >> Captive-portals@ietf.org > >> https://www.ietf.org/mailman/listinfo/captive-portals > > > > _______________________________________________ > > Captive-portals mailing list > > Captive-portals@ietf.org > > https://www.ietf.org/mailman/listinfo/captive-portals > > > > > > > -- > I don't think the execution is relevant when it was obviously a bad idea > in the first place. > This is like putting rabid weasels in your pants, and later expressing > regret at having chosen those particular rabid weasels and that pair of > pants. > ---maf > -- > I don't think the execution is relevant when it was obviously a bad idea > in the first place. > This is like putting rabid weasels in your pants, and later expressing > regret at having chosen those particular rabid weasels and that pair of > pants. > ---maf >
- [Captive-portals] option 160 conflict Michael Richardson
- Re: [Captive-portals] option 160 conflict Warren Kumari
- Re: [Captive-portals] option 160 conflict Bernie Volz (volz)
- Re: [Captive-portals] option 160 conflict Warren Kumari
- Re: [Captive-portals] option 160 conflict Bernie Volz (volz)
- Re: [Captive-portals] option 160 conflict Michael Richardson
- Re: [Captive-portals] option 160 conflict Lorenzo Colitti
- Re: [Captive-portals] option 160 conflict Tommy Pauly
- Re: [Captive-portals] option 160 conflict Bernie Volz (volz)
- Re: [Captive-portals] option 160 conflict Tommy Pauly
- Re: [Captive-portals] option 160 conflict Warren Kumari
- Re: [Captive-portals] option 160 conflict Erik Kline
- Re: [Captive-portals] option 160 conflict Michael Richardson
- Re: [Captive-portals] option 160 conflict Adam Roach
- Re: [Captive-portals] option 160 conflict Tommy Pauly
- Re: [Captive-portals] option 160 conflict Warren Kumari
- Re: [Captive-portals] option 160 conflict Erik Kline
- Re: [Captive-portals] option 160 conflict Erik Kline