https://github.com/isc-projects/kea/pull/143

Index: src/lib/dhcp/iface_mgr.cc
--- src/lib/dhcp/iface_mgr.cc.orig
+++ src/lib/dhcp/iface_mgr.cc
@@ -1021,7 +1021,7 @@ IfaceMgr::getLocalAddress(const IOAddress& remote_addr
     }
 
     // Create socket that will be used to connect to remote endpoint.
-    boost::asio::io_service io_service;
+    boost::asio::io_context io_service;
     boost::asio::ip::udp::socket sock(io_service);
 
     boost::system::error_code err_code;
