fatal errors after upgrading 1.9.6 to 1.10.0. 1.9.6 is working.

[Ron Varburg]

unbound-1.9.6 worked for me, or that is what I think. In particular it did create
/run/unbound.pid and /run/unbound.sock.
With 1.10.0, and without changing unbound.conf or any other configuration file that I am aware of, I get

fatal error: could not open ports
error: cannot open control interface /run/unbound.sock 8953
error: Cannot remove old local socket /run/unbound.sock (Read-only file system)

It could be the distribution has changed some unbound related files with 1.10.0.
Should I examine this more closely? As far as I can tell, there is no /run/unbound.sock
when unbound starts. Neither /run is a Read-only file system.
Perhaps the problem is related to
Fix #138: stop binding pidfile inside chroot dir in systemd service file
?