Just to add to this thread - also experience the same problem since upgrading to BigSur in the last month. No issues before upgrade. Have to reboot several times a day to resolve. Network connectivity completely drops out through both wired and wireless. Problem does appear to be DNS - browser cannot resolve hostnames. I have noticed that often the problem is triggered when I start Docker Desktop, however I have had it intermittently fail at other times (presumably when some other service starts that I haven't been able to identity?)
lstudley
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
Just to add to this thread - also experience the same problem since upgrading to BigSur in the last month. No issues before upgrade. Have to reboot several times a day to resolve. Network connectivity completely drops out through both wired and wireless. Problem does appear to be DNS - browser cannot resolve hostnames. I have noticed that often the problem is triggered when I start Docker Desktop, however I have had it intermittently fail at other times (presumably when some other service starts that I haven't been able to identity?)