K 10
svn:author
V 3
ume
K 8
svn:date
V 27
2002-05-20T15:01:19.000000Z
K 7
svn:log
V 213
Try to guess prefixlen for guessable cases.
- /0 if matches ::/128
- /64 if matches 2000::/3 and lowermost 64 bit is all 0
- /128 if matches 2000::/3 and lowermost 64 bit is non-zero 0

Obtained from:	KAME/NetBSD

END