#1. How current Linux SDK configure the second MAC ID from start, from the log from my AM62-SK board, the eth0 MAC is same as read from MAC_ID register. where is the eth1 MAC ID comes from?
root@am62xx-evm:~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 metric 1
inet 10.85.131.121 netmask 255.255.255.0 broadcast 10.85.131.255
inet6 fe80::f684:4cff:fefc:1d7e prefixlen 64 scopeid 0x20<link>
ether f4:84:4c:fc:1d:7e txqueuelen 1000 (Ethernet)
RX packets 32 bytes 4884 (4.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 60 bytes 6956 (6.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 metric 1
ether 70:ff:76:1e:a3:b0 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
#2. customer made 4pcs boards, there is one board display two eth ports have same MAC ID.
