Meets definition of a modem/router depending on what physical connection and protocols your ISP provides.
My Ethernet WAN connects to the ISPs NTU (optical fibre network termination unit), but WAN is capable of negotiating PPPoE, PPTP or L2TP with PAP/CHAP. Can also Dual WAN, Port forward, NAT.
The documentation is a little lacking. And no ADSL/VDSL etc. but it meets reqs for some.