i think the 0x20 draft was going nowhere in any case so cancelling it is fine.
148.68.249.66.in-addr.arpa domain name pointer
crawl-66-249-68-148.googlebot.com.
crawl-66-249-68-148.googlebot.com has address 66.249.68.148
it's interesting that it can be done by a web crawler, though.
re:
Forwarded message 2
This message is to notify you that submission of an Internet-Draft, draft-vixie-dnsext-dns0x20-00, has just been cancelled by a user whose computer has an IP address of 66.249.68.148.
The IETF Secretariat.
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