//go:build: freebsd
package systemops

import "syscall"

// filterRoutesByFlags - return true if need to ignore such route message because it consists specific flags.
func filterRoutesByFlags(routeMessageFlags int) bool {
	if routeMessageFlags&syscall.RTF_UP == 0 {
		return true
	}

	// NOTE: syscall.RTF_WASCLONED deprecated in FreeBSD 8.0 (https://www.freebsd.org/releases/8.0R/relnotes-detailed/)
	//  a concept of cloned route (a route generated by an entry with RTF_CLONING flag) is deprecated.
	if routeMessageFlags&(syscall.RTF_REJECT|syscall.RTF_BLACKHOLE) != 0 {
		return true
	}

	return false
}