awk '
    /.*截取字段ip内容.*/{
        ipstr=substr($5,1,match($5,":")-1)
        if(length(ipstr)>6){
            if(arr[ipstr]==0){
                arr[ipstr]=1
            }else{
                arr[ipstr]=arr[ipstr]+1
            }
        }
    }
END{
    for(i in arr){
        print arr[i]" "i
    }
}
'| sort -gr | awk '{print $2" "$1}'