I upgraded my desktop, and so far there are three problems:
- The network does not come up automatically; I have to click the network manager and "Enable" the wired interface for the DHCP client to start
- I cannot PING any hostname that resolves with an IPv6 address; I do _not_ have IPv6 on the interface, but it gives me "ping: UDP connect: No route to host". 12-STABLE did not have this issue.
- SVG icons in menus etc. do not work, and I cannot select an SVG file as icon for an application (it only lists PNG files in the dialog)
I realise it's early and risky to move to 13, but I could not wait.

Thanks for your efforts,
Eirik @ Modirum