diff --git a/include/linux/fib_rules.h b/include/linux/fib_rules.h
index ec9c7b1d3e9193eaaa3ef6dd7ade69bd2f55806a..c151273293e25186655a574af32de7d2faac18e4 100644
--- a/include/linux/fib_rules.h
+++ b/include/linux/fib_rules.h
@@ -8,6 +8,7 @@
 #define FIB_RULE_PERMANENT	1
 #define FIB_RULE_INVERT		2
 #define FIB_RULE_UNRESOLVED	4
+#define FIB_RULE_DEV_DETACHED	8
 
 struct fib_rule_hdr
 {
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 0d8bb2efb0c1ba8fac29b54668e6105c95bce5e6..7ac602cc8c85a6f1d7a43fe4fbde1d6afea0fe25 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -450,9 +450,13 @@ static int fib_nl_fill_rule(struct sk_buff *skb, struct fib_rule *rule,
 	if (rule->action == FR_ACT_GOTO && rule->ctarget == NULL)
 		frh->flags |= FIB_RULE_UNRESOLVED;
 
-	if (rule->ifname[0])
+	if (rule->ifname[0]) {
 		NLA_PUT_STRING(skb, FRA_IFNAME, rule->ifname);
 
+		if (rule->ifindex == -1)
+			frh->flags |= FIB_RULE_DEV_DETACHED;
+	}
+
 	if (rule->pref)
 		NLA_PUT_U32(skb, FRA_PRIORITY, rule->pref);