diff --git a/src/openvpn/dco_linux.c b/src/openvpn/dco_linux.c
index 8ce7026..1df56cf 100644
--- a/src/openvpn/dco_linux.c
+++ b/src/openvpn/dco_linux.c
@@ -857,6 +857,23 @@
 static int
 ovpn_handle_del_peer(dco_context_t *dco, struct nlattr *attrs[])
 {
+    /* we must know which interface this message is referring to in order to
+     * avoid mixing messages for other instances
+     */
+    if (!attrs[OVPN_ATTR_IFINDEX])
+    {
+        msg(D_DCO, "ovpn-dco: Received message without ifindex");
+        return NL_STOP;
+    }
+
+    uint32_t ifindex = nla_get_u32(attrs[OVPN_ATTR_IFINDEX]);
+    if (ifindex != dco->ifindex)
+    {
+        msg(D_DCO_DEBUG, "ovpn-dco: ignoring message for foreign ifindex %d",
+            ifindex);
+        return NL_SKIP;
+    }
+
     if (!attrs[OVPN_ATTR_DEL_PEER])
     {
         msg(D_DCO, "ovpn-dco: no attributes in OVPN_DEL_PEER message");
@@ -930,23 +947,6 @@
         return NL_STOP;
     }
 
-    /* we must know which interface this message is referring to in order to
-     * avoid mixing messages for other instances
-     */
-    if (!attrs[OVPN_ATTR_IFINDEX])
-    {
-        msg(D_DCO, "ovpn-dco: Received message without ifindex");
-        return NL_STOP;
-    }
-
-    uint32_t ifindex = nla_get_u32(attrs[OVPN_ATTR_IFINDEX]);
-    if (ifindex != dco->ifindex)
-    {
-        msg(D_DCO_DEBUG, "ovpn-dco: ignoring message for foreign ifindex %d",
-            ifindex);
-        return NL_SKIP;
-    }
-
     /* based on the message type, we parse the subobject contained in the
      * message, that stores the type-specific attributes.
      *