Bond two ethernet interfaces for combined speed

I wish to bond two internet links for combined speed.
Here is my config.

MT router 1:
LAN0 - 1Mbit Internet (fixed ip) (212.x.x.90)
LAN1 - Local MT Uplink (10.0.0.1/30)

MT router 2:
LAN0 - 1Mbit Internet (fixed ip) (212.x.x.76)
LAN1 - Local MT Uplink (10.0.0.5/30)

MT router 3:
LAN0 - Internal network (users) (192.168.0.0/24)
LAN1 - MT router 1 uplink (10.0.0.2/30)
LAN2 - MT router 2 uplink (10.0.0.6/30)

I tried with bonding eoip tunnels and failed because i cann’t define default gateway for bonding interface?

Can anyone help please :slight_smile: