[BUG] network is broken on Orange Pi PC

Dear all,

network is broken in U-Boot on orangepi_pc_defconfig:

U-Boot 2021.07-rc3-00059-gd8729a114e (May 31 2021 - 21:26:56 +0000) Allwinner Technology eth0: ethernet@1c30000 => dhcp sun8i_emac_eth_start: Timeout

Best regards

Heinrich