nanog mailing list archives
RE: Problems with removing NAT from a network
From: "Dan Wing" <dwing () cisco com>
Date: Thu, 6 Jan 2011 21:28:34 -0800
-----Original Message----- From: Matthew Kaufman [mailto:matthew () matthew at] Sent: Thursday, January 06, 2011 6:55 PM To: Owen DeLong Cc: Nanog Operators' Group Subject: Re: Problems with removing NAT from a network On 1/6/2011 5:48 PM, Owen DeLong wrote:Doesn't all of this become moot if Skype just develops a dual-stackcapable clientand servers?Not really. Imagine the case where you're on IPv6 and you can only reach IPv4 via a NAT64, and there's no progress made on the detection problem. And your family member is on a Skype-enabled TV plugged into an IPv4-only ISP. Now you can't get a direct media path between you, even though their ISP is giving them IPv4 and your ISP is *claiming* you can "still reach the IPv4 Internet". Skype can still make this work by relaying,
Skype could make it work with direct UDP packets in about 92% of cases, per Google's published direct-to-direct statistic at http://code.google.com/apis/talk/libjingle/important_concepts.html -d
but in order to protect the relay machine's bandwidth it will rate-limit the traffic, and so your A/V experience will suffer. And that's assuming there's enough dual-stacked relays... if there aren't, it won't be possible to find a relay that they can reach over IPv4 and you can reach over IPv6 that has available bandwidth. Matthew Kaufman
Current thread:
- Re: Problems with removing NAT from a network, (continued)
- Re: Problems with removing NAT from a network Leen Besselink (Jan 08)
- Re: Problems with removing NAT from a network Matthew Kaufman (Jan 08)
- Re: Problems with removing NAT from a network Leen Besselink (Jan 09)
- Re: Problems with removing NAT from a network Owen DeLong (Jan 09)
- Re: Problems with removing NAT from a network Owen DeLong (Jan 09)
- Re: Problems with removing NAT from a network Matthew Kaufman (Jan 10)
- Re: Problems with removing NAT from a network Mark Andrews (Jan 10)
- RE: Problems with removing NAT from a network Frank Bulk (Jan 08)
- Re: Problems with removing NAT from a network Joel Jaeggli (Jan 09)
- Re: Problems with removing NAT from a network Matthew Kaufman (Jan 06)
- RE: Problems with removing NAT from a network Dan Wing (Jan 06)
- Re: Problems with removing NAT from a network Matthew Kaufman (Jan 06)
- Re: Problems with removing NAT from a network Mikael Abrahamsson (Jan 06)
- Re: Problems with removing NAT from a network Benson Schliesser (Jan 06)
- Re: Problems with removing NAT from a network Owen DeLong (Jan 07)
- Re: Problems with removing NAT from a network Dobbins, Roland (Jan 07)
- Re: Problems with removing NAT from a network Jack Bates (Jan 07)
- Re: Problems with removing NAT from a network Owen DeLong (Jan 07)
- Re: Problems with removing NAT from a network Jack Bates (Jan 07)
- Re: Problems with removing NAT from a network Jared Mauch (Jan 07)
- RE: Problems with removing NAT from a network Dan Wing (Jan 07)