--- a/src/if-linux.c
+++ b/src/if-linux.c
@@ -97,6 +97,8 @@ int if_getssid_wext(const char *ifname, uint8_t *ssid);
 #define BPF_ETHCOOK		-ETH_HLEN
 #define BPF_WHOLEPACKET	0x0fffffff /* work around buggy LPF filters */
 
+#undef IFA_F_NOPREFIXROUTE
+
 struct priv {
 	int route_fd;
 	uint32_t route_pid;
