Real World NAT64 deployments

Frank Bulk frnkblk at
Thu Mar 3 22:38:34 CST 2011

There's no assurance that the content provider will use the ISP's 6to4
relay.  In fact, there's a good chance it won't use the ISP's 6to4 relay for
return traffic.


-----Original Message-----
From: Mark Andrews [mailto:marka at] 
Sent: Thursday, March 03, 2011 7:17 PM
To: William Herrin
Cc: nanog at
Subject: Re: Real World NAT64 deployments


Any ISP that is delivering IPv6 to their clients would be insane
to not run a 6to4 relays for return traffic to 2002::/16.

Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at

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