dns lookup failings when Cisco Umbrella Enabled on wLAN

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dns lookup failings when Cisco Umbrella Enabled on wLAN

wLAN was working fine for a weak, but this moring the wLAN started dropping all DNS lookups. Including manual look ups with nslookup .

 

I disabled Cisco Umbrella, and DNS lookups started working again.


I gave it an hour, and then I re-enablingCisco Umbrella. DNS lookups seemed fine, but less 20 minutes later the wLAN started dropping DNS lookups again, and had to disable Cisco Umbrella.

 

Has anyone seen this issue before?
Any suggestions? 

 

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