New Shake, and I had the problems noted by several folks - addresses resolved, but was unable to contact hosts.
My router is a Netgear Orbi, and it doesn’t block ports. Chased several rabbit holes…
Found some sites that discussed /etc/dhcpd.conf. As now expected, the “static routers=” , which should have been the same as the domain_name_server, was empty. Adding the same IP address and restarting networking fixed it.
After editing the file, perform the following:
sudo systemctl daemon-reload
sudo systemctl stop dhcpcd.service
sudo systemctl start dhcpcd.service
sudo systemctl restart networking.service
Still don’t know why that happened - still more rabbit holes to dive into.
Kevin