diff --git a/src/server.c b/src/server.c
index 9e39764..a22ae61 100644
--- a/src/server.c
+++ b/src/server.c
@@ -99,7 +99,7 @@ static int check_request(request_t* req)
         req->ip_type != REQ_IPV6)
         return REQ_ERR_BAD_IP_VERSION;
 
-    if (req->ip_type != REQ_IPV4)
+    if (req->ip_type != REQ_IPV4 && req->ip_type != REQ_IPV6)
         return REQ_ERR_UNSUPPORTED_IP_VERSION;
 
     if (req->req != REQ_REQ)