Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Francisco_60530's avatar
Francisco_60530
Icon for Nimbostratus rankNimbostratus
May 05, 2011

DNS Clone Pool

Hi Gurus, my concern is about if there is a way with an iRule to ask an URL to a DNS's pool and send the traffic to the first responding DNS

 

2 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    May 05, 2011
    Hi Francisco,

     

     

    Do you want LTM to dynamically look up the IP address for a hostname to clone traffic to? This isn't possible in a simple way as far as I'm aware. I don't think you can dynamically set the destination IP:port to arbitrary values when using the iRule clone command. You can specify a specific member IP and port using the clone command, but I think the address:port combination must already be defined in the pool.

     

     

    You could open a case with F5 Support asking them to support using a virtual server as a clone destination. With that functionality you could use RESOLV::lookup and the node command to resolve a hostname to an IP address and then set the destination IP:port to it.

     

     

    Aaron