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TDA4VM: DUT can't receive an IPv4 Packet with a Destination Address being a Limited Broadcast Address

Zhang Lili
Prodigy 10 points
Part Number: TDA4VM

HI

        experts.

        Now we are doing TC8 test, and we encounter an Ethernet problem, that is, the computer is directly connected to TDA4, and the data packets sent by the computer to destination address 255.255.255.255 cannot be caught by TDA4 with tcpdump, but they can be obtained by changing TDA4 to another computer with Wireshark. Does TDA4 have restrictions on this address?

         If we need to support receiving and processing UDP packets destined for restricted broadcast addresse, what should we do?

         The test case:

         The packet capture result:

           In addition, we tried adding routing entries by using the route add command, but it still didn't work. Looking forward to your reply.Thanks!