In Bidirectional Forwarding Detection for IPv6 (BFDv6) associated mode, an IPv6 static route is automatically associated
with an IPv6 static BFDv6 neighbor if the static route next hop exactly matches the static BFDv6 neighbor.
An IPv6 static route requests a BFDv6 session for each static BFDv6 neighbor that has one or more associated IPv6 static
routes and is configured over an interface on which BFD has been configured. The state of the BFDv6 session will be used to
determine whether the associated IPv6 static routes are inserted in the IPv6 RIB. For example, static routes are inserted
in the IPv6 RIB only if the BFDv6 neighbor is reachable, and the static route is removed from the IPv6 RIB if the BFDv6 neighbor
subsequently becomes unreachable.
BFDv6 associated mode requires you to configure a BFD neighbor and static route on both the device on which the BFD-monitored
static route is required and on the neighboring device.