migrate to dhtnet namespace

Change-Id: I7143a010bd83e8cfa7a3c8c3072ed23f6f0ba8e3
diff --git a/src/upnp/protocol/igd.cpp b/src/upnp/protocol/igd.cpp
index 862e908..e816fb8 100644
--- a/src/upnp/protocol/igd.cpp
+++ b/src/upnp/protocol/igd.cpp
@@ -23,7 +23,7 @@
 #include "igd.h"
 //#include "logger.h"
 
-namespace jami {
+namespace dhtnet {
 namespace upnp {
 
 IGD::IGD(NatProtocolType proto)