Anyone having issues with ethernet adapters losing network connectivity on Big Sur and Monterey? We’ve seen this a ton, and can’t find a real fix. Users on Catalina never had this issue, but once they upgrade many of them have chronic problems with the adapter losing network. But the Mac thinks it’s still connected so it never fails over to wifi. Unplugging the adapter and plugging it back in restores connection, but it’s a major annoyance.
We are seeing this way too much with Monterey. The worst case is that we are seeing this during deployment. In most cases, it happens right after we install Crowdstrike. Based on some discussions on the MacAdmins slack channels, it appears to be related to Network Filters (Crowdstrike and Cisco AnyConnect both have it. So I am doubly challenged.)
I am also seeing it on existing computer. Right now, my computer is connected to a CalDigit TS3+ dock and I can't get an IP address. I am stuck on using WiFi.
When it bites my Macs it bites the whole network stack, nothing can connect until reboot. And I truly hate having to tell users this is a macOS bug, but we've seen it since our very first Big Sur installs.
We use Cybereason rather than CrowdStrike; Palo Alto GlobalProtect for VPN, and only the Umbrella component of AnyConnect (both of which do install network filters).
I suspect that's what's causing out issue as well, though it's odd that it seems to affect some network adapters more than others. Unfortunately do to security policies I can't leave Carbon Black uninstalled. I did have one user recently who was having this issue chronically, and since I uninstalled and re-installed Carbon Black I haven't seen the issue return for him.