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Forum Discussion

Raj_135327's avatar
Raj_135327
Icon for Nimbostratus rankNimbostratus
Apr 22, 2017

irule to resolve DNS query ( no dns licence on LTM)

I have a VIP to answer dns queries. This VIP forwards all dns queries to 8.8.8.8. Here is the deal i don't want it to forward dns queries say for example: to 8.8.8.8 and want this to be resolved to ...
application delivery
iRules
LTM
oscarnet_69487's avatar
oscarnet_69487
Icon for Nimbostratus rankNimbostratus
Apr 22, 2017

HI

try this irule apply to your dns service virtual server 

when DNS_REQUEST {
    if { ([DNS::question name] equals "www.test1.com") } {
        DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.1"
            DNS::return
            } else {
        discard
    }
}

have a good day!

Samir_Jha_52506's avatar
Samir_Jha_52506
Icon for Noctilucent rankNoctilucent
Apr 22, 2017

I guess, DNS iRule only works if dns license provisioned in LTM. Correct me if I am wrong?