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Forum Discussion

Richard__Harlan's avatar
Richard__Harlan
Historic F5 Account
Jun 15, 2006

DNS Lookup

Playing with the following rule trying to get DNS lookups working. Every time I hit the rule the name::response allways comes back empty. Any ideas what I am doing wrong. Thanks     when HTTP_RE...
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Thomas_Schaefer's avatar
Thomas_Schaefer
Icon for Nimbostratus rankNimbostratus
Apr 24, 2009
Is this configuration still required on v9.4? I tried this and am get a blank response as well.

I'm just doing a brute force test to see if resolution is working. I assume this can be host to IP. 

 
 when HTTP_REQUEST  priority 5 { 
     Hold HTTP data until hostname is resolved 
    HTTP::collect 
   
     Start a name resolution on the hostname 
    NAME::lookup "www.xmission.com" 
 } 
 when NAME_RESOLVED { 
    log local0. "client name = >[NAME::response]<" 
   
     Release HTTP data once hostname is resolved 
    HTTP::release 
 }

Thanks,

Tom Schaefer