adding a static route towards the vultr gateway fixes this, as @bswinnerton pointed out.

Apparently this doesn't work because of the ancient Quagga version.

Works fine on the latest nightly.

Here's a a tutorial for EdgeRouters: https://lochnair.net/2017/03/13/bonding-internet-connections/

I tried to get this working on a good known OpenVPN TAP configuration. I can confirm that it's flaky and will require additional debugging.

Also, it doesn't seem to work because vtun0 is not coming up -- but that seems to be related to my specific config.

Well, I'd like to use bonding with round-robin load balancing over two VDSL2 uplinks to same provider with the same latency (my ISP wants a business account for MLPPP).

Looks like it doesn't work. I can't see any traffic on bond0 although it's configured in round-robin mode.

I've copied it and I can set bond-group on the OpenVPN interface. I'll check if it actually works in a minute. (you need to replace "tunnel" in the second string with openvpn).

This also happens with the DHCP server configuration if the DHCP subnet is different than the one used on the LAN interface (when it's configured with VRRP by following the VRRP tutorial on the VyOS wiki).

I say don't change it (keep it the same as it's in 1.1.7). I'd consider YAML or JSON (in that order) though. (I am/was lylylyly on IRC).