Mine

alias dns2 { 
  hadd -m20 DnsResolve $1 $true
  .dns $1 
}
on *:dns:{ 
  if ($hget(DnsResolve,$dns(0).ip)) {
    var %addr = $iif($raddress,$v1,$dns(0).ip) 
    if (!$raddress) { echo -a 4,1Failed to resolved $dns(0).ip }
    else { echo -a 4,1Resolved $dns(0).ip to $raddress }
    .hdel -sw DnsResolve $dns(0).ip
  }
  else { 
    echo -a 4,1Resolved $dns(1) to $raddress 
    .hdel -sw 4,1DnsResolve $dns(1)
  }
}