Environment

iPrint for OES
iPrint Advanced
OES 2023
OES 2018 SP3

Situation

The following error is returned when trying to manage iPrint objects in iManager:
 

Error - Operation failed, unknown errorRequest (SERVER_ERROR) - bad status code (0x501)

The following error is returned when trying to use iprintman:
 

iprintman psm -l -u cn=admin,o=novell

[DATE + TIME] com.novell.service.iPrint.shared.iPrintException setErrorCodesFromIPPError SEVERE: iPrintException: Unexpected Exception:

 Request (SERVER_ERROR) - bad status code (0x501)

    at com.novell.service.iPrint.ipp.IPPAttributeSet.readAttributes(Unknown Source)

    at com.novell.service.iPrint.ipp.IPPService.query(Unknown Source)

    at com.novell.service.iPrint.iprntman.PSM.reCreateIPPStack(Unknown Source)

    at com.novell.service.iPrint.iprntman.PSM.list(Unknown Source)

    at com.novell.service.iPrint.cli.CLIpsmHelper.processCommand(Unknown Source)

    at com.novell.service.iPrint.cli.IPrintManCLI.main(Unknown Source)

[DATE + TIME]  com.novell.service.iPrint.cli.IPrintManCLI main SEVERE: Unhandled iPrintException.getLibError() : 1281

[DATE + TIME]  com.novell.service.iPrint.cli.IPrintManCLI main SEVERE: iPrintException.getMessage() is : Request (SERVER_ERROR) - bad status code (0x501)

IPP Error: 0x501

/var/log/apache2/error_log shows:
 

[DATE + TIME]  [:error] [pid 16520] REST call failed. HTTP Status Code: 0

[DATE + TIME]  [:error] [pid 16520] Fetching license info failed.

[DATE + TIME]  [:error] [pid 16520] Http Code : 0

[DATE + TIME]  [:error] [pid 16520] Curl Code : 35

[DATE + TIME]  [:error] [pid 16520] Error occurred while fetching licensing information.

Cause

The localhost entry within the /etc/hosts file is wrong.  This wrong information causes localhost to resolve to an invalid address.

Resolution

Add a # to the start of the localhost line within the /etc/hosts file:

Problem:

::1             localhost ipv6-localhost ipv6-loopback

Correct:
#::1             localhost ipv6-localhost ipv6-loopback

Additional Information

If using IPv6, remove the word localhost from the line so it looks like this:
::1             ipv6-localhost ipv6-loopback

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