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

Forum Discussion

RemcoA's avatar
RemcoA
Icon for Nimbostratus rankNimbostratus
Aug 15, 2025

F5 DNS combine all zones into one top-level zone

We are migrating our F5 DNS(GTM) towards a new automated setup using AS3, but I noticed we forgot the create a top-level zone in the zone runner configuration. So now all our WideIPs already deployed...
DNS
zone
zone record issue
zonerunner
Mohamed_Ahmed_Kansoh's avatar
Mohamed_Ahmed_Kansoh
Icon for MVP rankMVP
Aug 17, 2025

Could you please explain more about your inquiry and try to give examples! 

  • RemcoA's avatar
    RemcoA
    Icon for Nimbostratus rankNimbostratus
    Aug 17, 2025

    Let me try to explain. In our internal DNS setup we have delegated zone xxx.yyy.net towards our F5 DNS. But when we started deploy wideips we did not create zone xxx.yyy.net in the zonerunner configuration. So what now has happened that for every wideip we created a zone <wideip-name>.xxx.yyy.net has been created with A-records for all poolmembers for this wideip.

    So we are investigating how we can create the top-level zone xxx.yyy.net in the zone runner configuration an move all A-records in this zone and delete all wideip specfic zones.

    But I am also not sure what the best way of working is in this case, should we created a zone for the delegated zone xxx.yyy.net or just let the system create the wideip specific zones?