Same problem here. Then I noticed that I still had the LAN IPv6 address on my computer:
enp30s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
...
inet6 fdf9:5b71:1388::836 prefixlen 128 scopeid 0x0<global>
- So you can ssh to root@fdf9:5b71:1388::1.
- Then set “maindhcp” to “1” instead of “0” in /etc/config/dhcp (“odhcp” section).
- “/etc/init.d/odchpd restart”
- Connect again with DHCP, you should now get an IPv4 address
However, the update seems to be really broken. No IPv4 connection although factory reset, the “register DHCP devices in DNS” doesn’t work, … 