My W5300 configuration is:
IP:192.168.1.88
Gateway: 192.168.1.1
Subnet: 255.255.255.0
I have tested the router accessing to the same network segment, and I have also tested the direct connection with the computer. They are unicast and 255.255.255.255 broadcast.
But 192.168.1.255 can’t.
Ping is not offline in the whole process.