Comment 2 for bug 1934931

It is unclear from the description that this has anything to do with networking. Are there any firewall denials in the logs (eg, /var/log/ufw.log or /var/log/kern.log)? If you disable ufw (sudo ufw disable) does the problem go away?

As an aside, IIRC, MS-Teams is not a lightweight application and I suspect this could be memory consumption unrelated to the firewall.