[#2833] Remove old broken link in comments

diff --git a/src/lib/d2srv/tests/dns_client_unittests.cc b/src/lib/d2srv/tests/dns_client_unittests.cc
index a560546b0fc6fd523172e83dad353f5fe0ebf1c6..601394ef14bc82b5537ffb63b44fc874a7e5bb20 100644 (file)
--- a/src/lib/d2srv/tests/dns_client_unittests.cc
+++ b/src/lib/d2srv/tests/dns_client_unittests.cc
@@ -351,8 +351,7 @@ public:
         /// @todo The timeout value could be set to 0 to trigger timeout
         /// instantly. However, it may lead to situations that the message sent
         /// in one test will not be dropped by the kernel by the time, the next
-        /// test starts. This will lead to intermittent unit test errors as
-        /// described in the ticket http://oldkea.isc.org/ticket/3265.
+        /// test starts. This will lead to intermittent unit test errors.
         /// Increasing the timeout to a non-zero value mitigates this problem.
         /// The proper way to solve this problem is to receive the packet
         /// on our own and drop it. Such a fix will need to be applied not only