technically is possible to configure not just bonding interfaces as we now allow
vyos@PE-01# set interfaces bonding bond0 evpn uplink
it can be an ethernet interface , which is used by IGP :
FRR: Uplink/Core tracking¶ When all the underlay links go down the PE no longer has access to the VxLAN +overlay. To prevent blackholing of traffic the server/ES links are protodowned on the PE. A link can be setup for uplink tracking via the following zebra configuration - evpn mh uplink `
vyos@PE-01# set interfaces ethernet eth0 evpn Configuration path: interfaces ethernet eth0 [evpn] is not valid