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

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Teddy_Brewski's avatar
Teddy_Brewski
Icon for Altocumulus rankAltocumulus
Apr 08, 2026

Two load balancers with one public IP + two types of SSL certificates (custom and automatic)

Hello,

Can I have two HTTPS load balancers sharing the same public IP but using different SSL certificate types: one HTTPS with Custom Certificate and another one HTTPS with Automatic Certificate?

I don't have any issues with the HTTPS with Custom Certificate one, but creating the second one gives VIRTUAL_HOST_PENDING_A_RECORD message for some days.

Thank you.

4 Replies

  • Hello Teddy_Brewski​ 

    First of all lets clarify you a speaking for XC.

    Yes you can have many LBs you using the same IP

    But in order to have automatic ceritificate you have to crate an A record or CNAME pointing to the F5 XCIP or URL accordingly and and another CNAME for the automatic certificate validation.

    Have you created them?

    • Teddy_Brewski's avatar
      Teddy_Brewski
      Icon for Altocumulus rankAltocumulus

      Thank you Injeyan_Kostas​ 

      Yes indeed, I'm talking about XC.

      I did create an A record (tried CNAME too), but it didn't really help.

      May be I need to provide a little bit more info.

      So, I have a load balancer with the Custom Certificate option selected. It has a wildcard certificate attached to it covering *.mydomain.org. No issues here -- everything works fine.

      I created another load balancer and would like to use Automatic Certificate option this time. I defined one domain entry in the second load balancer: sitea.mydomain.org.  I created an A (and CNAME) entries, but VIRTUAL_HOST_PENDING_A_RECORD is still there.

      I think my first load balancer takes the priority now since it has a wildcard certificate.