HI, I've installed the NanoPC-T4 with rk3399-eflasher-friendlycore-lite-focal-4.19-arm64-20210617.img. ⋅ ip link set eth0 down ⋅ ip link set eth0 mtu 2000 results in: RTNETLINK answers: Invalid argument only ip link set eth0 mtu 45 (and lower values) result in Error: mtu less tha...