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Forum Discussion

spalande's avatar
spalande
Icon for Nacreous rankNacreous
Oct 22, 2013

http outbound proxy

I'm using below iRule to forward http request to cloud. where F5 will act as outbound proxy. when HTTP_REQUEST { log local0. [HTTP::uri] set host [HTTP::host] log local0. "Host is $host" set...
application delivery
aws
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devops
iRules
Kevin_Stewart's avatar
Kevin_Stewart
Icon for Employee rankEmployee
Oct 22, 2013

It would appear that your RESOLV::lookup command is failing. Per its wiki page, you should probably indicate the DNS server to use as an argument to the command. Example:

set ip [RESOLV::lookup 10.10.10.53 -a $host]

Ref: https://devcentral.f5.com/wiki/iRules.resolv__lookup.ashx

Also, run a TCPDUMP to see if the box is making the port 53 calls out to the DNS server.