do not let through unicast packets on inactive endpoints

Author: AlfaSegato

source/FreeRTOS_IPv4.c

@@ -321,9 +321,7 @@ enum eFrameProcessingResult prvAllowIPPacketIPv4( const struct xIP_PACKET * cons
             ( FreeRTOS_FindEndPointOnIP_IPv4( ulDestinationIPAddress ) == NULL ) &&
             /* Is it an IPv4 broadcast address x.x.x.255 ? */
             ( ( FreeRTOS_ntohl( ulDestinationIPAddress ) & 0xffU ) != 0xffU ) &&
-            ( xIsIPv4Multicast( ulDestinationIPAddress ) == pdFALSE ) &&
-            /* Or (during DHCP negotiation) we have no IP-address yet? */
-            ( FreeRTOS_IsNetworkUp() != pdFALSE ) )
+            ( xIsIPv4Multicast( ulDestinationIPAddress ) == pdFALSE ) )
         {
             /* Packet is not for this node, release it */
             eReturn = eReleaseBuffer;

source/FreeRTOS_Routing.c

@@ -388,7 +388,6 @@ struct xIPv6_Couple
                 #endif
                 {
                     if( ( ulIPAddress == 0U ) ||
-                        ( pxEndPoint->ipv4_settings.ulIPAddress == 0U ) ||
                         ( pxEndPoint->ipv4_settings.ulIPAddress == ulIPAddress ) )
                     {
                         break;