Fix a linking issue with GCC 11.1.0

diff --git a/pdns/iputils.cc b/pdns/iputils.cc
index c5aa2a87b23582de904025cea58b2fa58c0a4b5f..05eed1245ba48ab19be26e08391d8f5cbe637c21 100644 (file)
--- a/pdns/iputils.cc
+++ b/pdns/iputils.cc
@@ -437,7 +437,7 @@ size_t sendMsgWithOptions(int fd, const char* buffer, size_t len, const ComboAdd
   return 0;
 }
 
-template class NetmaskTree<bool>;
+template class NetmaskTree<bool, Netmask>;
 
 /* requires a non-blocking socket.
    On Linux, we could use MSG_DONTWAIT on a blocking socket