[mod-security-users] Filter IP by Netmask

[<an...@bb...>]

Dear all:
        We are using Modsecurity2.1.5 to limit threshold  by IP.But we
want to  unlimit GoogleBot's threshold. According to
http://ws.arin.net/whois/?queryinput=66.249.66.1 ,GoogleBot's net
range is 66.249.64.0 - 66.249.95.255 and netmask 255.255.244.0.
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SecRule REMOTE_ADDR "66.249.64.0/255.255.244.0" skip:4,pass,nolog
#################################################################
Does Modsecurity support "66.249.64.0/255.255.244.0" or how to use PCRE?
Any suggestion will be appreciated^^