AR750M - Wireless DHCP address wrong

When I connect to any home Wi-Fi network in Router mode, connection is made but the DHCP address from home router obtained is completely wrong e.g it should be but is in range. (Router DHCP addresses to other devices correct.). So no Internet. In Cable mode, also, but works if I set address manually.

Anyone else experienced this?

Sounds like WWAN on the router is set to a static IP.

It is most likely a problem of your network. Someone has put another DHCP server in your network and issuing wrong IP addresses. This happens if you connect a router’s LAN to your network, which you should connect WAN.

Thanks for all the suggestions, eventually found to be very intermittent DHCP server in router.