OCI: CUPS Print Server Rejecting Requests With Error "172.x.x.x" using invalid Host: field ""xxxx.example.com:631" in Error_log While Accesing Using Cname (Doc ID 2901228.1)

Last updated on OCTOBER 10, 2022

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Linux OS - Version Oracle Linux 6.0 to Oracle Linux 7.9 [Release OL6 to OL7U9]
Information in this document applies to any platform.

Symptoms

CUPS print server rejecting requests with "Invalid Host" message while trying to connect using cname.

from /var/log/cups/error_logs

Changes

Customer trying to access CUPS URL using cname, it works fine while trying to access with the cups server hostname but gives bad request while accessing with cname

Cause

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In this Document

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