I have created disposable sys-net, gave it a name sys-net-disposable, routed to it all VMs previously connected to sys-net, and then deleted sys-net.
I have found an entry in 90-default.policy, which I changed to:
#Default rule for all TemplateVMs - direct the connection to sys-net
qubes.UpdatesProxy * @type:TemplateVM @default allow target=
and since I use sys-whonix, I didn’t succeed to find other occurrences in
.../policy.d/, nor in
What other issues/implications of changing sys-net’s name I might expect? Didn’t notice any so far if it matters.