frame priority for DHCPv4 initial packets. This cannot be achieved
with netfilter mangle tables because of the raw socket bypass.
+ * The [DHCPv4] and [IPv6AcceptRA] sections in .network file gained new
+ QuickAck= boolean setting that enables the TCP quick ACK mode for the
+ routes configured by the aquired DHCPv4 lease or received router
+ advertisements (RAs).
+
* The RouteMetric= option (for DHCPv4, DHCPv6, and IPv6 advertised
routes) now accepts three values, for high, medium, and low preference
of the router (which can be set with the RouterPreference=) setting.