diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index c7f597da01cd..cf2203ff2bfd 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1174,9 +1174,19 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset, int target,
 
 int ipv6_find_tlv(const struct sk_buff *skb, int offset, int type);
 
-struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
-				const struct ipv6_txoptions *opt,
-				struct in6_addr *orig);
+struct in6_addr *__fl6_update_dst(struct flowi6 *fl6,
+				  const struct ipv6_txoptions *opt,
+				  struct in6_addr *orig);
+
+static inline struct in6_addr *
+fl6_update_dst(struct flowi6 *fl6, const struct ipv6_txoptions *opt,
+	       struct in6_addr *orig)
+{
+	if (likely(!opt))
+		return NULL;
+
+	return __fl6_update_dst(fl6, opt, orig);
+}
 
 /*
  *	socket options (ipv6_sockglue.c)
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 54088fa0c09d..cd318ff0dcd8 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -1336,21 +1336,21 @@ struct ipv6_txoptions *__ipv6_fixup_options(struct ipv6_txoptions *opt_space,
 EXPORT_SYMBOL_GPL(__ipv6_fixup_options);
 
 /**
- * fl6_update_dst - update flowi destination address with info given
+ * __fl6_update_dst - update flowi destination address with info given
  *                  by srcrt option, if any.
  *
  * @fl6: flowi6 for which daddr is to be updated
  * @opt: struct ipv6_txoptions in which to look for srcrt opt
  * @orig: copy of original daddr address if modified
  *
- * Returns NULL if no txoptions or no srcrt, otherwise returns orig
+ * Return: NULL if no srcrt or invalid srcrt type, otherwise returns orig
  * and initial value of fl6->daddr set in orig
  */
-struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
-				const struct ipv6_txoptions *opt,
-				struct in6_addr *orig)
+struct in6_addr *__fl6_update_dst(struct flowi6 *fl6,
+				  const struct ipv6_txoptions *opt,
+				  struct in6_addr *orig)
 {
-	if (!opt || !opt->srcrt)
+	if (!opt->srcrt)
 		return NULL;
 
 	*orig = fl6->daddr;
@@ -1374,4 +1374,4 @@ struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
 
 	return orig;
 }
-EXPORT_SYMBOL_GPL(fl6_update_dst);
+EXPORT_SYMBOL_GPL(__fl6_update_dst);