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Configurring GSS-TSIG for DDNS - (domain mismatch)

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I can't understand following syslog error messages and see where I am wrong in the configuration of the DDNS GSS-TSIG


debug GSS-TSIG zone has invalid principal (domain mismatch).

debug Enabled GSS-TSIG for zone using principal --invalid--.

err GSS-TSIG is enabled but there are no GSS-TSIG enabled zones with this member's domain. No GSS-TSIG secured updates can be sent.


How can domain mismatch or what doest it mean exactly ?

Since we change the security from "none" to "GSS-TSIG" in the DHCP-DDNS configuration, update DDNS do not work anymore.


Best Regards


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