comm: do not use localhop for SVS

SVS does not work with localhop; Sync Interests need to
be forwarded at the network layer to all nodes in the group.

Change-Id: I32cba55f98f5a77257dd249d1b7c92d78460b39b
diff --git a/src/conf-parameter.cpp b/src/conf-parameter.cpp
index d1c6412..81c92ca 100644
--- a/src/conf-parameter.cpp
+++ b/src/conf-parameter.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  The University of Memphis,
+ * Copyright (c) 2014-2023,  The University of Memphis,
  *                           Regents of the University of California
  *
  * This file is part of NLSR (Named-data Link State Routing).
@@ -96,7 +96,9 @@
 {
   m_network = networkName;
 
-  m_syncPrefix.append("localhop");
+  if (m_syncProtocol != SyncProtocol::SVS) {
+    m_syncPrefix.append("localhop");
+  }
   m_syncPrefix.append(m_network);
   m_syncPrefix.append("nlsr");
   m_syncPrefix.append("sync");