Big Sur 11.0.1 Connection issues

I've some awkward connection issues since upgrade was installed (20B5012d). Apps like Chrome, Music, Mail work normally, Problem is with Safari, Siri and also with feedback assitant. Siri shows up but then tell me, there is problem with connection. Pages can't be loaded or is loaded very slowly in Safari (slowly like 10 minutes). App Store can't be loaded too.
Do someone have similar issues?
Big Sur 11.0.1 Connection issues
 
 
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