Forum Discussion
eightsixstud_29
Sep 15, 2016Nimbostratus
Error using iRule for Conditional DNS Lookups
I am looking to perform some DNS lookups on a domain and based on the results, either provide the client with the external IP if it exists or the internal IP if there isn't an external A record. ...
- Sep 15, 2016
HI,
Can you please try below irule.
when DNS_REQUEST { if { ([IP::addr [IP::client_addr] equals 192.168.1.0/24]) and ([DNS::rrname] contains "test.com") } { set dnsName [RESOLV::lookup @8.8.8.8 -a [DNS::rrname]] if { ([DNS::rrtype] equal "A") } { DNS::return } } }
Samir_Jha_52506
Noctilucent
HI,
Can you please try below irule.
when DNS_REQUEST {
if { ([IP::addr [IP::client_addr] equals 192.168.1.0/24]) and ([DNS::rrname] contains "test.com") } {
set dnsName [RESOLV::lookup @8.8.8.8 -a [DNS::rrname]]
if { ([DNS::rrtype] equal "A") } {
DNS::return
}
}
}
eightsixstud_29
Sep 19, 2016Nimbostratus
We tried using the modified version, but are receiving the same error. Also, we have made the below changes, with no luck. Any ideas?
01070151:3: Rule [/Common/Test] error: /Common/Test:2: error: [undefined procedure: DNS::rrname][DNS::rrname]
/Common/Test:4: error: [undefined procedure: DNS::rrtype][DNS::rrtype]
when DNS_REQUEST {
if { ([IP::addr [IP::client_addr] equals 192.168.1.0/24]) and ([DNS::rrname] equals "test.com") } {
[RESOLV::lookup @8.8.8.8 -a [DNS::rrname]]
if { ([DNS::rrtype] equals "A") } {
DNS::return
}
}
}
Recent Discussions
Related Content
DevCentral Quicklinks
* Getting Started on DevCentral
* Community Guidelines
* Community Terms of Use / EULA
* Community Ranking Explained
* Community Resources
* Contact the DevCentral Team
* Update MFA on account.f5.com
Discover DevCentral Connects