FAILED selecting pool based on DNS reverse lookup result.

e.g.

 config

[root@ve10:Active] config  tmsh list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.9:http
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        tcp { }
    }
    rules {
        qux
    }
    snat automap
}
[root@ve10:Active] config  tmsh list ltm rule qux
ltm rule qux {
    when CLIENT_ACCEPTED {
   8.8.8.8 is dns server
   203.216.231.189 is yahoo.co.jp
  NAME::lookup @8.8.8.8 inet -ptr 203.216.231.189
}
when NAME_RESOLVED {
  if { [domain [NAME::response] 1] eq "jp" } {
    log local0. "jp - do something"
  } else {
    log local0. "not jp - do something else"
  }
}
}

 log

[root@ve10:Active] config  tail -f /var/log/ltm
Apr 16 15:49:45 local/tmm info tmm[4955]: Rule qux : jp - do something