How does your Nagios-Config (in ~/etc/nagios/conf.d/check_mk_objects.cfg) for that host look like?
I tried it with the addresses you supplied and it looks like this:
define host {
_ADDRESSES_4 9.9.9.9
_ADDRESS_4 8.8.8.8
_ADDRESS_4_1 9.9.9.9
_ADDRESS_6
_ADDRESS_FAMILY 4
.....
.....
check_command check-mk-host-ping!-w 200.00,80.00% -c 500.00,100.00%
....
}
And for the PING-Check:
define service {
active_checks_enabled 1
check_command check_mk_active-icmp!'-w' '200.00,80%' '-c' '500.00,100%' '$_HOSTADDRESSES_4$' '$_HOSTADDRESS_4$'
check_interval 1.0
host_name test-dns
service_description PING
use check_mk_perf,check_mk_default
}