--- busybox-1.22.1/networking/libiproute/iplink.c
+++ busybox-1.22.1-iplink/networking/libiproute/iplink.c
@@ -31,6 +31,16 @@
 #ifndef IFLA_LINKINFO
 # define IFLA_LINKINFO 18
 # define IFLA_INFO_KIND 1
+# define IFLA_INFO_DATA 2
+#endif
+
+#ifndef IFLA_VLAN_MAX
+# define IFLA_VLAN_ID 1
+# define IFLA_VLAN_FLAGS 2
+struct ifla_vlan_flags {
+	uint32_t	flags;
+	uint32_t	mask;
+};
 #endif
 
 /* taken from linux/sockios.h */