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February-March
2002
slideset 7
-
45
DNAME and bitstrings
Combined magic (2)
$ORIGIN rir-revers.apnic.net.
; APNIC
; next 12 bits:
; 0 0011 0000 000
\[x1c0/12]
IN DNAME
ip6.isp1.net.
$ORIGIN ip6.arpa.
; root
; first 23 bits go to RIR
; 0010 0000 0000 0001 0000 001
\[x200102/23]
DNAME
rir-reverse.apnic.net.
Question: \[x200102380000186000000001000a000f].ip6.arpa PTR
Answer: \[x200102380000186000000001000a000f].ip6.arpa CNAME
\x[1c00000c3000000000800500078/105].reverse.rir-reverse.apnic.net
\[x1c00000c3000000000800500078/105].reverse.rir-reverse.apnic.net
CNAME
\[x x1c00000c3000000000800500078/93.ip6.isp1.net.
