The connect only has a 100 mbit Ethernet port so it is unlikely it broke your  network. 

Once your Internet connection clears up power down all Sonos, reboot router and controller and power the Sonos back up. 

Your issue is more likely with the Bridge, that is now obsolete. There is no need to use a bridge at this point. Do you also have the Connect amp hardwired to your network?

If so, you definitely do not need the Bridge

So remove the Bridge and check your network again.

It sounds like having two Sonos devices wired to your router is creating a broadcast storm.

Just have one connected, or invest in a switch so you can have multiple Sonos connected by ethernet being fed into one ethernet port on the router.

This week’s S1 update appears to be for the controller only, device firmware unchanged.

Obviously dump the Bridge as others have said.

My port is connected directly to the router while the Connect:amp is running through a switch. I will try and only have Amp connected and see what that does.

that worked, thank you all.

Both running through the switch should also work.

I used to have a Virgin Media Hub 3 that is listed on the incompatible network hardware, but I had 4 Sonos devices wired through one switch and didn’t experience network errors.

The wording now in the support page states “Wire only one Sonos product to the router or network switch.” which I have now queried for accuracy.