Hello!
I am trying to implement dual ethernet interface
device on Xilinx baremetal logic. I’v already implement
receiving data from both of two interfaces but now I
want to realize forwarding from one interface to
another. I’v connected to 1st interface and try to ping
the second one. On wireshark I see arp requests that
have no responses.
May be problem is in forwarding of broadcast
messages?
#if IP_FORWARD
/* non-broadcast packet? */
if
(!ip4_addr_isbroadcast(ip4_current_dest_addr(),
inp)) {
/* try to forward IP packet on (other)
interfaces */
ip4_forward(p, (struct ip_hdr
*)p->payload, inp);
} else
#endif /* IP_FORWARD */
I can not understand this part. Why do we forward
only unicast messages?
Sorry, i am niewbe in this stuff