diff --git a/src/evhelper.cpp b/src/evhelper.cpp
index 2a7cdc7..6001d48 100644
--- a/src/evhelper.cpp
+++ b/src/evhelper.cpp
@@ -698,6 +698,7 @@ bool evsocket::init_canIPv6() noexcept
 #endif
 
 struct IfMapDaemon : private epicsThreadRunable {
+    SockAttach attach;
     epicsMutex lock;
     epicsEvent wake;
     std::shared_ptr<const IfaceMap::Current> latest;