----
IP addresses can be specified using any syntax understood by `Net::IP`. The
-name `all` is an alias for `0/0`.
+name `all` is an alias for `0/0` and `::/0` (meaning all IPv4 and IPv6
+addresses).
The default policy is `allow`.
Listening IP
------------
+By default the `pveproxy` and `spiceproxy` daemons listen on the wildcard
+address and accept connections from both IPv4 and IPv6 clients.
+
By setting `LISTEN_IP` in `/etc/default/pveproxy` you can control to which IP
address the `pveproxy` and `spiceproxy` daemons bind. The IP-address needs to
be configured on the system.
virtual guest. So, please use a maintenance window to bring this change in
effect.
+NOTE: setting the `sysctl` `net.ipv6.bindv6only` to `1` will cause the daemons
+ to only accept connection from IPv6 clients. This non-default setting usually
+ also causes other issues. Either remove the `sysctl` setting, or set the
+ `LISTEN_IP` to `0.0.0.0` (which will only allow IPv4 clients).
+
+
SSL Cipher Suite
----------------