Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usage-recommendations-02.txt
Owen DeLong <owen@delong.com> Mon, 10 March 2014 21:03 UTC
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From: Owen DeLong <owen@delong.com>
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Date: Mon, 10 Mar 2014 14:01:45 -0700
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To: William Cerveny <v6ops@wjcerveny.com>
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Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usage-recommendations-02.txt
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On Mar 10, 2014, at 12:49 PM, William Cerveny <v6ops@wjcerveny.com> wrote: > Posting onto the list with what I said at the v6ops meeting on Thursday: > > I’ve been using a ULA in a test lab for perhaps 6 years. They work fine > and serve our requirement for having a block of addresses that can be > routed within the test lab at a single location. It is possible that at > some point we will want to route with a different test lab, for which we > wouldn’t want this traffic to leave either test lab. We aren’t routing > the traffic outside of the test lab and for our application it is > undesirable for our test traffic left the test lab. > > I can think of two situations where ULAs would be more valuable in > “isolated” networks than GUAs would be: > 1) We don’t ever want the traffic addressed with ULAs to leave the test > network. If we addressed with a GUA, it would be easier for the traffic > to be accidentally routed outside the test lab (I think Fred spelled out > this scenario). It might be easier for this to occur over a wider area of routing, but, I do not believe that it is any easier to accidentally route GUA somewhere than it is to accidentally route ULA there. I will agree that it will be more obviously visible in the routing table if such were to occur, but the ability to misconfigure a router does not change simply by using ULA addresses. > 2) There may be administratively complex or prohibitive challenges in > acquiring GUAs for specific projects. If one were to need addresses > (other than link-local addresses) for a small isolated network an > assigned GUA is unavailable, it could be desirable to use a ULA instead > of random address space. I agree that in all cases where GUA is unavailable, ULA is a preferred alternative. However, I will point out that the policies for obtaining GUA have been made very liberal and easy in most RIRs and that the requirements are barely above “I have a network I want to number with IPv6 addresses. Please assign me a prefix. Kthxbye.” IMHO, this is desirable. My point is that we should avoid recommending ULA+NPT for hosts that are communicating to the outside world because NPT and all other forms of NAT should be considered harmful. Owen > > Bill Cerveny > > On Fri, Feb 14, 2014, at 05:13 AM, internet-drafts@ietf.org wrote: >> >> A New Internet-Draft is available from the on-line Internet-Drafts >> directories. >> This draft is a work item of the IPv6 Operations Working Group of the >> IETF. >> >> Title : Recommendations of Using Unique Local Addresses >> Authors : Bing Liu >> Sheng Jiang >> Filename : draft-ietf-v6ops-ula-usage-recommendations-02.txt >> Pages : 15 >> Date : 2014-02-14 >> >> Abstract: >> This document provides guidance of how to use ULAs. It analyzes ULA >> usage scenarios and recommends use cases where ULA addresses might be >> beneficially used. >> >> >> The IETF datatracker status page for this draft is: >> https://datatracker.ietf.org/doc/draft-ietf-v6ops-ula-usage-recommendations/ >> >> There's also a htmlized version available at: >> http://tools.ietf.org/html/draft-ietf-v6ops-ula-usage-recommendations-02 >> >> A diff from the previous version is available at: >> http://www.ietf.org/rfcdiff?url2=draft-ietf-v6ops-ula-usage-recommendations-02 >> >> >> Please note that it may take a couple of minutes from the time of >> submission >> until the htmlized version and diff are available at tools.ietf.org. >> >> Internet-Drafts are also available by anonymous FTP at: >> ftp://ftp.ietf.org/internet-drafts/ >> >> _______________________________________________ >> v6ops mailing list >> v6ops@ietf.org >> https://www.ietf.org/mailman/listinfo/v6ops > > _______________________________________________ > v6ops mailing list > v6ops@ietf.org > https://www.ietf.org/mailman/listinfo/v6ops
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Randy Bush
- [v6ops] I-D Action: draft-ietf-v6ops-ula-usage-re… internet-drafts
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… ek
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Sander Steffann
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Alexandru Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Alexandru Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Alexandru Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark ZZZ Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Jan-Frode Myklebust
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark Andrews
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… joel jaeggli
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… joel jaeggli
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark ZZZ Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Liubing (Leo)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Liubing (Leo)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Liubing (Leo)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Randy Bush
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Alexandru Petrescu
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark Andrews
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark Andrews
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark Andrews
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ray Hunter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Nick Hilliard
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… David Farmer
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Eric Vyncke (evyncke)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Gert Doering
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ray Hunter
- [v6ops] multiple prefixes [no longer draft-ietf-v… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Liubing (Leo)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Tore Anderson
- Re: [v6ops] multiple prefixes [no longer draft-ie… Ray Hunter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] multiple prefixes [no longer draft-ie… Brian E Carpenter
- Re: [v6ops] multiple prefixes [no longer draft-ie… Ray Hunter
- Re: [v6ops] multiple prefixes [no longer draft-ie… Brian E Carpenter
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Liubing (Leo)
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark ZZZ Smith
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Victor Kuarsingh
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mark Andrews
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Mikael Abrahamsson
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… William Cerveny
- Re: [v6ops] I-D Action: draft-ietf-v6ops-ula-usag… Owen DeLong