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Re: Comcast's 6to4 Relays
From: Owen DeLong <owen () delong com>
Date: Wed, 20 Apr 2011 16:41:51 -0400
Sent from my iPad On Apr 20, 2011, at 4:09 PM, Doug Barton <dougb () dougbarton us> wrote:
On 04/20/2011 12:50, Owen DeLong wrote:Turnning off the servers will not reduce the brokenness of 6to4, it will increase it.Depends on your definitions of "increase" and "broken." If all the relays disappeared tomorrow then the failure rate would be 100%, sure. But that would mean a single, (more or less) instant, deterministic failure that any modern OS ought to be able to handle intelligently; rather than the myriad of ways that 6to4 can half-succeed now. To me, that's a win.
Uh, no. It would, indeed, be a single deterministic failure. However, most OS are coded that if there isn't native, they'll try 6to4 if it's turned on. Many OS have it turned on by default. As such, it would simply be a 100% failure, not one that was automatically dealt with in a rational or useful manner. It would require manual intervention on a large number of hosts. To me, that's not a win. That's a loss. The success rate for 6to4 today in most environments is close to 90%. There are many environments in widespread use today (hotel networks and airports come to mind) where IPv4 does not enjoy that level of success. Owen
Current thread:
- Re: CIsco IOS bug info request, (continued)
- Re: CIsco IOS bug info request Ingo Flaschberger (Apr 20)
- Re: CIsco IOS bug info request Randy Bush (Apr 20)
- Re: Comcast's 6to4 Relays Brzozowski, John (Apr 20)
- Re: Comcast's 6to4 Relays Doug Barton (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- Re: Comcast's 6to4 Relays Steven Bellovin (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- Re: Comcast's 6to4 Relays Jim Gettys (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- Re: Comcast's 6to4 Relays Doug Barton (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- Re: Comcast's 6to4 Relays TJ (Apr 20)
- Re: Comcast's 6to4 Relays Matthew Petach (Apr 19)
- RE: Comcast's 6to4 Relays Antonio Querubin (Apr 19)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- RE: Re: Comcast's 6to4 Relays Bhoomi Jain (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)