diff --git a/net/dns/manager_freebsd.go b/net/dns/manager_freebsd.go
index fe839c084..ce6891f37 100644
--- a/net/dns/manager_freebsd.go
+++ b/net/dns/manager_freebsd.go
@@ -6,6 +6,11 @@ package dns
 
 import "tailscale.com/types/logger"
 
+func isResolvconfActive() bool {
+	// TODO(danderson): implement somewhere.
+	return false
+}
+
 func NewOSConfigurator(logf logger.Logf, _ string) (OSConfigurator, error) {
 	switch {
 	case isResolvconfActive():