In u-boot, please configure environment variables as the following
eth10addr=00:E0:0C:00:2B:0a
eth11addr=00:E0:0C:00:2B:0b
eth12addr=00:E0:0C:00:2B:0c
eth13addr=00:E0:0C:00:2B:0d
eth14addr=00:E0:0C:00:2B:0e
eth15addr=00:E0:0C:00:2B:0f
eth1addr=00:E0:0C:00:2B:01
eth2addr=00:E0:0C:00:2B:02
eth3addr=00:E0:0C:00:2B:03
eth4addr=00:E0:0C:00:2B:04
eth5addr=00:E0:0C:00:2B:05
eth6addr=00:E0:0C:00:2B:06
eth7addr=00:E0:0C:00:2B:07
eth8addr=00:E0:0C:00:2B:08
eth9addr=00:E0:0C:00:2B:09
ethaddr=00:E0:0C:00:2B:00
In u-boot, would you please provide the result of command "mdio list"?
=> mdio list
FSL_MDIO0:
1 - RealTek RTL8211F <--> FM1@DTSEC3
2 - RealTek RTL8211F <--> FM1@DTSEC4
4 - Vitesse VSC8514 <--> FM1@DTSEC1
5 - Vitesse VSC8514 <--> FM1@DTSEC2
6 - Vitesse VSC8514 <--> FM1@DTSEC5
7 - Vitesse VSC8514 <--> FM1@DTSEC6
FM_TGEC_MDIO:
1 - Aquantia AQR105 <--> FM1@TGEC1