Snmp THROUGH css

Hi,
I am trying to monitor some hosts, using SNMP, behind our CSS11501.
I Read The Fine Manual, and eventually got
something working, but it broke DNS on the hosts.
I removed the Group statements, and now DNS works, but not SNMP.
Anyone have any clues on this? the relevant config info is below.
Thanks in advance.
flow-state 161 udp flow-enable
!************************** SERVICE **************************
service APP1
ip address 192.168.16.75
redundant-index 90
active
service APP2
ip address 192.168.16.77
redundant-index 89
active
!*************************** OWNER ***************************
owner BOGUS
content mgmt1
add service APP1
vip address 192.168.16.18
protocol udp
active
content mgmt2
add service APP2
vip address 192.168.16.19
protocol udp
active
!*************************** GROUP ***************************
group snmp-app1
vip address 192.168.16.18
add service APP1
active
group snmp-app2
vip address 192.168.16.19
add service APP2
active

you should try to add to the group config 'portmap disable' and also add
'flow-state 53 udp flow-disable nat-enable'
or
'flow-state 53 udp flow-enable'
If this does not work, capture a sniffer trace font-end and backend and verify what the CSS does with the DNS traffic.
Gilles.

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