Two WANs, two wireguards, one datacenter instance, many attempts, no joy

[Power]

I found this:

Multi-WAN VPN - Possible?

If you need 2 tunnel for same ip, it works only with policy based VPN You can map ip to FQDN set system static-host-mapping host-name foo1.local inet 5.5.5.5 set system static-host-mapping host-name foo2.local inet 5.5.5.5 set vpn ipsec site-to-site peer foo1.local xxxxx set vpn ipsec site-to-site peer foo2.local xxxxx Some new features will be with XFRM interfaces ref Route-based VPN :: strongSwan Documentation

Imagine that as a feature for wireguard. It seems the ipsec implementation of VyOS supports it. Currently, one can

set interface wireguard wg0 peer speedy address 1.2.3.4

but not a FQDN.