Add forgotten SO_REUSEADDR option
diff --git a/library/net.c b/library/net.c
index f00e8ef..19f699d 100644
--- a/library/net.c
+++ b/library/net.c
@@ -229,7 +229,7 @@
 int net_bind( int *fd, const char *bind_ip, int port )
 {
 #if defined(POLARSSL_HAVE_IPV6)
-    int ret = POLARSSL_ERR_NET_UNKNOWN_HOST;
+    int n, ret = POLARSSL_ERR_NET_UNKNOWN_HOST;
     struct addrinfo hints, *addr_list, *cur;
     char port_str[6];
 
@@ -260,6 +260,10 @@
             continue;
         }
 
+        n = 1;
+        setsockopt( *fd, SOL_SOCKET, SO_REUSEADDR,
+                    (const char *) &n, sizeof( n ) );
+
         if( bind( *fd, cur->ai_addr, cur->ai_addrlen ) != 0 )
         {
             close( *fd );