karma_tool: optimized for speedy IP search, IPv6
karma_tool: optimized for speedy IP search, IPv6

fixed one IPv6 issue

sieutruc/qpsmtpd,salvis/qpsmtpd,smtpd/qpsmtpd,priyadi/qpsmtpd,sieutruc/qpsmtpd,priyadi/qpsmtpd,salvis/qpsmtpd,priyadi/qpsmtpd,msimerson/qpsmtpd,msimerson/qpsmtpd,sieutruc/qpsmtpd,smtpd/qpsmtpd