Update: maintenance DNS-Server

Message-Id: 202101141931
Time: 14.01.2021, app. 5:45 to 7 pm
Affected:
Impact: outage of the main DNS-resolver

A critical security update unfortunately cause an outage of the main DNS-resolver and the DHCP-server for the duration of about an hour. It was caused by an error in the update-procedures of the manufacturer of the used DNS-appliances. The error had to be analysed first and subsequently bypassed.

Affected were, from about 5:45pm to 7pm:
– DNS: name resoltion via the main DNS-resolver, the secondary resolver was available
– DHCP: dynamic IP-distribution and therefore new connections, most notably in eduroam/wireless networks

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