diff --git a/src/rm/RequestManagerVirtualNetwork.cc b/src/rm/RequestManagerVirtualNetwork.cc
index da1859f28b..b8f424254f 100644
--- a/src/rm/RequestManagerVirtualNetwork.cc
+++ b/src/rm/RequestManagerVirtualNetwork.cc
@@ -450,6 +450,8 @@ void VirtualNetworkReserve::request_execute(
             if (rvn != 0)
             {
                 vnpool->drop(rvn, att.resp_msg);
+
+                rvn->unlock();
             }
         }
 
diff --git a/src/vnm/AddressRange.cc b/src/vnm/AddressRange.cc
index c3f3cfbf72..ce955264ea 100644
--- a/src/vnm/AddressRange.cc
+++ b/src/vnm/AddressRange.cc
@@ -630,6 +630,11 @@ int AddressRange::ip_to_i(const string& _ip, unsigned int& i_ip) const
 
     string ip = _ip;
 
+    if ( ip.find_first_not_of("0123456789.") != std::string::npos )
+    {
+        return -1;
+    }
+
     while ( (pos = ip.find('.')) !=  string::npos )
     {
         ip.replace(pos,1," ");
@@ -641,11 +646,6 @@ int AddressRange::ip_to_i(const string& _ip, unsigned int& i_ip) const
         return -1;
     }
 
-    if ( ip.find_first_not_of("0123456789 ") != std::string::npos )
-    {
-        return -1;
-    }
-
     iss.str(ip);
 
     i_ip = 0;