Multipath through virtual interfaces

Hello,

I would like to use Zerotier’s multipath feature for load balancing or failover on a computer that has only one network interface.

If I plug this computer (192.168.1.1) on a switch, on this switch I have a 4G router (192.168.1.2), my ISP internet router (192.168.1.3), another internet access (192.168.1.4), create three virtual network interfaces on the computer, one (TAP1) using the 4G router as a gateway, the other one (TAP2) using my ISP router as a gateway and TAP3 using the last internet access as a gateway, can I instruct Zerotier to do multi path on TAP1, TAP2 and TAP3 to load balance / failover between those three internet accesses ?

Also, the documentation states that multi path works with any physical interface, so I am having doubts.

Thank you!