Incomplete DNS CNAME response from the DNS server

Solution Verified - Updated -

Issue

Application unable to access a specific CNAME domain due to incomplete DNS response

$ curl -vv https://site1.example.com

* Couldn't resolve host: site1.example.com
*  Closing connection 0 
* curl: (6) could not resolve host

84356   Jul  4, 2024 04:42:44.340082000 UTC 0.000000000 10.x.x.x    172.30.x.x  45925,53    64  DNS 77  Standard query 0x78b8 A site1.example.com
84357   Jul  4, 2024 04:42:44.340301000 UTC 0.000219000 172.30.x.x  10.x.x.x    53,45925    64  DNS 175 Standard query response 0x78b8 A site1.example.comn CNAME site2.example.com

<No Address record in the response>

Environment

  • Red Hat Enterprise Linux
  • Red Hat Openshift Container Platform (RHOCP)

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