--- iproute2-5.15.0/tc/f_flower.c.orig
+++ iproute2-5.15.0/tc/f_flower.c
@@ -304,7 +304,7 @@
 	char *slash, *mask = NULL;
 	size_t slen, slen_mask = 0;
 
-	slash = index(str, '/');
+	slash = strchr(str, '/');
 	if (slash) {
 		*slash = 0;
 		mask = slash + 1;
@@ -1087,7 +1087,7 @@
 			if (mask_len + strlen(token) > XATTR_SIZE_MAX)
 				return -1;
 
-			data_len = strlen(rindex(token, ':'));
+			data_len = strlen(strrchr(token, ':'));
 			sprintf(&mask[mask_len], "ffff:ff:");
 			mask_len += 8;
 			memset(&mask[mask_len], 'f', data_len - 1);
--- iproute2-5.15.0/tc/m_ct.c.orig
+++ iproute2-5.15.0/tc/m_ct.c
@@ -163,7 +163,7 @@
 	char *slash, *mask = NULL;
 	size_t slen, slen_mask = 0;
 
-	slash = index(str, '/');
+	slash = strchr(str, '/');
 	if (slash) {
 		*slash = 0;
 		mask = slash+1;