Forum Discussion
Leilow214
Altostratus
AltostratusF5 DNS iRule for disabling DNS Express for a CNAME query on a particular domain
Hey Folks! So we're using an F5 DNS as a resolver for some of our linux servers and at the same time it is the authoritative DNS for that particular domain let's say we host example.com on the F5 D...
Leilow214Altostratus
AltostratusHi JRahm,
Good day!
Thank you for the response, appreciate it. How do I refine it only for the targeted domain? Can you share the commands/syntax please?
Regards,
Leo
JRahm
Admin
Admin
something like this should work for you, I threw in my.domain.com as a test condition.
when DNS_REQUEST {
if { ([string toupper [DNS::question type]] eq "CNAME") && ([string toupper [DNS::question name]] eq "my.domain.com")} {
DNS::disable dnsx
}
}Again...i'd test to see how DNS::question returns values, and if all caps or all lower case on each sub-command (type, name, etc) then you can safely remove the string toupper to avoid the additional operations.
- Leilow214
Thank you so much for the response guys! I will test this out by next week and let you all know the result.
Regards,
Leo
- LiefZimmerman
