Sorry folks, I think I'm suffering from the the same 'disease', but I'm still 'blind' to see the solution to the following issue.
I'm on a v5 board to which I flashed the "new" uboot version a long time, ago. (I think I flashed flash-image-DDR3-1g_2cs_2-800_800.bin that time as I had timing issues with the version with higher speed.)
Though I could get the system to boot after the reset of the uboot environment I never was able to get the i-net running on the applied images, so I gave up in the end.
"Messing around" with my Cubietrucks atm I thought I would give the espressobin a second try, but still without success.
To me it looks like network manager is running and when I set "/sbin/ip link set dev wan up" as suggested by @y52 the wan-port will get ipv6 addresses (I have to connections to the i-net), but no ipv4 ones.
So what do I have to do to get those (in the meantime community versions of bookworm etc.) to work? (thx!)
root@espressobin:~# nmcli device show
GENERAL.DEVICE: eth0
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 5A:FD:04:25:F9:14
GENERAL.MTU: 1508
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: on
IP4.GATEWAY: --
IP6.ADDRESS[1]: fe80::58fd:4ff:fe25:f914/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 256
GENERAL.DEVICE: lan0
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 5A:FD:04:25:F9:14
GENERAL.MTU: 1500
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: off
IP4.GATEWAY: --
IP6.GATEWAY: --
GENERAL.DEVICE: lan1
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 5A:FD:04:25:F9:14
GENERAL.MTU: 1500
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: off
IP4.GATEWAY: --
IP6.GATEWAY: --
GENERAL.DEVICE: wan
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 5A:FD:04:25:F9:14
GENERAL.MTU: 1500
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: on
IP4.GATEWAY: --
IP6.ADDRESS[1]: 2a02:908:nnnn:nnnn:58fd:4ff:fe25:f914/64
IP6.ADDRESS[2]: 2002:mmmm:mmmm:0:58fd:4ff:fe25:f914/64
IP6.ADDRESS[3]: fe80::58fd:4ff:fe25:f914/64
IP6.GATEWAY: fe80::1eed:6fff:fe07:29bd
IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[2]: dst = ::/0, nh = fe80::1eed:6fff:fe07:2>
IP6.ROUTE[3]: dst = 2a02:908:nnnn:nnnn::/64, nh = ::, >
IP6.ROUTE[4]: dst = ::/0, nh = fe80::b2f2:8ff:fe23:29>
IP6.ROUTE[5]: dst = 2002:mmmm:mmmm::/64, nh = ::, mt >
GENERAL.DEVICE: lo
GENERAL.TYPE: loopback
GENERAL.HWADDR: 00:00:00:00:00:00
GENERAL.MTU: 65536
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
IP4.ADDRESS[1]: 127.0.0.1/8
IP4.GATEWAY: --