Upgrade to Monterey OSX causes loss of broadband connection

Thanks for replying, racheals14,

I have tried Ethernet/wired connection for a couple days now and same symptoms, perhaps even more prevalence/frequency of dropped broadband connection.

I run typical apps for work: Full MS Office suite, including Outlook & Teams, Spark for personal email, WhatsApp and Signal for chat and Chrome and Safari Browsers. I can't tell if any of the Apps is the culprit or not. Seems random, but I'll try to work on isolating the Apps.

I will also try Safe Mode when I finish up work today and report back on results there. More to come...

Thanks again for caring!

Best,

FightingIbis

Reposting from Apple Community username: "pjarnts" who left this "fix" on the other big thread on this issue and I am reposting the fix that worked for me here, as well:

"I have been seeing this same issue, and to work around it I went into System Preferences -> Network and selected Cisco AnyConnect Socket Filter in the left hand pane (there are actually two instances of the Cisco AnyConnect Socket Filter and I chose the one that had a description of Please use “Cisco AnyConnect Socket Filter” to control this DNS proxy configuration). Then click the options pull down menu (the button that has three dots and a down arrow) and chose Make Service Inactive) then click the Apply button. After that, DNS service was restored. Will continue to monitor for reoccurrence."

I have been using this approach for 24 hours now without loss of DNS or connectivity. First time in two months and since the Monterey update I have had this level of Broadband consistency.

Best,

FightingIbis

Adding to my own and others' earlier posts...

My employer also pushes a regular patch to Cisco AnyConnect about every day or two and this adds in the second instance of "Cisco AnyConnect Socket Filter" in the Network Preferences column on the right side of the panel. Effectively, this breaks DNS and connectivity. A simple removal of this restores connectivity and I go back to the same time interval of a day or two of unfettered connectivity, then cycle repeats. I have observed this for the last week.

Better situation, but still not completely fixed. It appears Cisco has opened a case with Apple and we can only hope that this is addressed in an update soon. FWIW, I updated to the latest version of AnyConnect from my work.

I'll repost if there are any material changes to the situation and appreciate others' comments very much!

-FightingIbis