How To Tell When GTM Responds With iRule Address Or Fallback Address?
Out Enterprise DNS delegates A-Record responses for a particular Wide IP domain. My WideIP's Pool Member Fallback address is the default A-Record response. The WIP iRule contains the logic that if the DNS query is sourced from a particular address, a different A-Record is returned. How do I tell whether the WideIP is responding with it's Fallback IP address or with the address stated within the iRule? If I go to DNS>GSLB>Wide IP List> Select the Wide IP and go to Statistics, I do see Requests: Total 225 Persisted 0 A 155 AAAA 70 Resolved 155 Dropped 0 Load Balancing: Preferred 155 Alternate 0 Fallback 0 CNAME Res 0 Returned to DNS 11 Returned from DNS 0 I've also tried tcpdump -vv but the packets don't state what the GTM responds with, for the particular DNS queries. Thanks for any/all help! Mike