Multipath through virtual interfaces


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 ( on a switch, on this switch I have a 4G router (, my ISP internet router (, another internet access (, 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!