HSL iRule error.

Looks ike it could just be a formatting problem. Try copying this exactly:

when DNS_REQUEST { 
    log local0. "Got request from [IP::client_addr] - req is [DNS::question name]"
    set hsl [HSL::open -publisher /Common/DNS-PUB]
    HSL::send $hsl "[DNS::question name] - [IP::client_addr]"
}

when DNS_RESPONSE {
    set rrs [DNS::answer]
    foreach rr $rrs {
        HSL::send $hsl "$rrs"
    }
}