1 files changed, 1 insertions, 1 deletions
diff --git a/net.h b/net.h
index 1447aba0..363cb2a8 100644
--- a/net.h
+++ b/net.h
@@ -156,7 +156,7 @@ int if_route(const struct interface *,
 void free_routes(struct rt *);
 
 int open_udp_socket(struct interface *);
-const size_t udp_dhcp_len;
+extern const size_t udp_dhcp_len;
 ssize_t make_udp_packet(uint8_t **, const uint8_t *, size_t,
 			struct in_addr, struct in_addr);
 ssize_t get_udp_data(const uint8_t **, const uint8_t *);