Use network name in sync prefix to avoid sync leaks from other networks

refs: #4101

Change-Id: I97d76d54571a124de33c6e62e07115c0df26882c
diff --git a/src/conf-parameter.hpp b/src/conf-parameter.hpp
index 0bee942..c3573bb 100644
--- a/src/conf-parameter.hpp
+++ b/src/conf-parameter.hpp
@@ -122,6 +122,7 @@
     m_network = networkName;
 
     m_chronosyncPrefix.append("localhop");
+    m_chronosyncPrefix.append(m_network);
     m_chronosyncPrefix.append("NLSR");
     m_chronosyncPrefix.append("sync");