I have a Leased Line with 5 available static IP addresses and I want to be able to use this Leased Line in a multi-office building and give a few offices their own WAN IP address and others a general WAN.

I have been able to set one wan port to one static IP and have all the LANS flow through that one WAN port albeit as separate LANs. However, I want to do something like this:

WAN 1 (static WAN IP to LAN 1 with, for example 192.168.1.1)
WAN 2 (static WAN IP to LAN 2 with..192.168.2.1
WAN 3 (static WAN IP to LAN 3 with..192.168.3.1)
WAN 4 (Static WAN IP to LANs 4, 5, 6 and 7 each with their own IP range )

Trouble we have is the Leased Line provider has only one port open on what I assume is the modem as the static wan and NAT is done at Vigor.

How can I achieve the above or is it not possible ?

Many thanks in advance

I'm not familiar with the 3910 but I'd guess you'd do it using route policy

Something like this https://www.slashadmin.co.uk/draytek-vigor-2960-multi-tenant-setup-using-private-and-public-ip-addresses-on-lan/