[master] Added ChangeLog entry for #3547.

Also, corrected the whitespaces in the preceding entry.

ChangeLog

@@ -1,9 +1,14 @@
-876.   [func]          tomek
-       Two new MAC aquisition methods implemented for DHCPv6:
-       docsis-modem (which extracts MAC address from an option inserted
-       by a cable modem) and docsis-ctms (which extracts MAC address from
-       an option inserted by CMTS which acts as a DHCPv6 relay agent).
-       (Trac #3553, git ad0a3772774bc5f9831a5ba16725a5a22887b8cb)
+877.	[func]           marcin
+	DHCPv4 server drops unicast packets sent to the IPv4 address
+	on which the server is not configured to listen.
+	(Trac #3547, git 803f1f0f145b0f252ffc3637f758a47e0061de85)
+
+876.	[func]          tomek
+	Two new MAC aquisition methods implemented for DHCPv6:
+	docsis-modem (which extracts MAC address from an option inserted
+	by a cable modem) and docsis-ctms (which extracts MAC address from
+	an option inserted by CMTS which acts as a DHCPv6 relay agent).
+	(Trac #3553, git ad0a3772774bc5f9831a5ba16725a5a22887b8cb)
 
 875.    [bug]           afidalgo, marcin
 	The DHCPv4 server no longer appends the trailing dot to the