The meter supports a single IP address for both physical Ethernet connections.
Your device’s second Ethernet port acts as an Ethernet switch to help simplify network connections and reduce installation time and costs, by having shorter Ethernet cable runs between devices without needing additional Ethernet routers or repeaters. You cannot connect your meter to two different Ethernet networks. The two Ethernet ports do not split the signal, so connecting both of the ports should not impact your communications speed.
The meter uses dual-stack IPv4/IPv6 routing technology to manage network communications and allow network hosts to communicate with the meter using either IPv4 or IPv6.