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(-)a/src/internet-stack/ipv4-l3-protocol.cc (-2 / +2 lines)
 Lines 545-552    Link Here 
545 
  // 4) packet is not broadcast, and is passed in with a route entry but route->GetGateway is not set (e.g., on-demand)
 545 
  // 4) packet is not broadcast, and is passed in with a route entry but route->GetGateway is not set (e.g., on-demand)
546 
  // 5) packet is not broadcast, and route is NULL (e.g., a raw socket call, or ICMP)
 546 
  // 5) packet is not broadcast, and route is NULL (e.g., a raw socket call, or ICMP)
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547
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  // 1) packet is destined to limited broadcast address
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  // 1) packet is destined to limited broadcast address or link-local multicast address
549 
  if (destination.IsBroadcast ())
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  if (destination.IsBroadcast () || destination.IsLocalMulticast ())
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    {
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    {
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      NS_LOG_LOGIC ("Ipv4L3Protocol::Send case 1:  limited broadcast");
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      NS_LOG_LOGIC ("Ipv4L3Protocol::Send case 1:  limited broadcast");
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      ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
 552 
      ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
(-)a/src/node/ipv4-address.cc (+7 lines)
 Lines 240-245    Link Here 
240 
  return (m_address >= 0xe0000000 && m_address <= 0xefffffff);
 240 
  return (m_address >= 0xe0000000 && m_address <= 0xefffffff);
241 
}
 241 
}
242 

          242
          

        

            

              
              
              243
              
bool 

            

            

              244
              
Ipv4Address::IsLocalMulticast (void) const

            

            

              245
              
{

            

            

              246
              
  // Link-Local multicast address is 224.0.0.0/24

            

            

              247
              
  return (m_address & 0xffffff00) == 0xe0000000;

            

            

              248
              
}

            

            

              249
              

            

        

          243
          
void

          250
          
void

        

        

          244
          
Ipv4Address::Serialize (uint8_t buf[4]) const

          251
          
Ipv4Address::Serialize (uint8_t buf[4]) const

        

        

          245
          
{

          252
          
{

        



(-)a/src/node/ipv4-address.h
      (+4 lines)




  

    

    

       Lines 112-117
       
    
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          112
          
    */

          112
          
    */

        

        

          113
          
  bool IsMulticast (void) const;

          113
          
  bool IsMulticast (void) const;

        

        

          114
          
  /**

          114
          
  /**

        

            

              
              
              115
              
    * \return true only if address is in local multicast address scope, 224.0.0.0/24

            

            

              116
              
    */

            

            

              117
              
  bool IsLocalMulticast (void) const;

            

            

              118
              
  /**

            

        

          115
          
   * \brief Combine this address with a network mask

          119
          
   * \brief Combine this address with a network mask

        

        

          116
          
   *

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   *

        

        

          117
          
   * This method returns an IPv4 address that is this address combined

          121
          
   * This method returns an IPv4 address that is this address combined

        



(-)a/src/routing/static-routing/ipv4-static-routing.cc
      (+14 lines)




  

    

    

       Lines 222-227
       
    
  Link Here 
    

  

        

          222
          
  Ptr<Ipv4Route> rtentry = 0;

          222
          
  Ptr<Ipv4Route> rtentry = 0;

        

        

          223
          
  uint16_t longest_mask = 0;

          223
          
  uint16_t longest_mask = 0;

        

        

          224
          
  uint32_t shortest_metric = 0xffffffff;

          224
          
  uint32_t shortest_metric = 0xffffffff;

        

            

              
              
              225
              
  /* when sending on local multicast, there have to be interface specified */

            

            

              226
              
  if (dest.IsLocalMulticast ())

            

            

              227
              
    {

            

            

              228
              
      NS_ASSERT_MSG (oif, "Try to send on link-local multicast address, and no interface index is given!");

            

            

              229
              

            

            

              230
              
      rtentry = Create<Ipv4Route> ();

            

            

              231
              
      rtentry->SetDestination (dest);

            

            

              232
              
      rtentry->SetGateway (Ipv4Address::GetZero ());

            

            

              233
              
      rtentry->SetOutputDevice (oif);

            

            

              234
              
      rtentry->SetSource (m_ipv4->GetAddress (oif->GetIfIndex (), 0).GetLocal ());

            

            

              235
              
      return rtentry;

            

            

              236
              
    }

            

            

              237
              

            

            

              238
              

            

        

          225
          
  for (NetworkRoutesI i = m_networkRoutes.begin (); 

          239
          
  for (NetworkRoutesI i = m_networkRoutes.begin (); 

        

        

          226
          
       i != m_networkRoutes.end (); 

          240
          
       i != m_networkRoutes.end (); 

        

        

          227
          
       i++) 

          241
          
       i++) 

        






  

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