My Server and Client run both on Linux.<br>
The Server broadcasts multicast, the Client listens multicast.

My Client has to migrate to another site,<br>
and unfortunately multicast is not allowed between the two sites :-(

**How to convey multicast between the two sites?**<br>
 - Through TCP or UDP?<br>
 - What tools do you recommend?<br>
 - What about latency?

**I received an good answer about _Cisco_ configuration (GRE),<br>
but one of the network teams do not want to monitor/maintain it,<br>**
therefore transmission may break several times per year<br>
and support team will spend too many hours to understand and repair the incident.<br>
**=> therefore, what should be the best alternative to GRE?**

Is there a solution based on _Linux kernel features_ <br>
or on network card capabilities? (low latency is important)<br>
An usage example will be appreciate :-)

----------

multicast channel: 225.1.0.1:6666

**Current:** Server and Client on the same site

    ,--------.    ,----------.
    | Server |    |  Client  |
    | sends  |    | listens  |
    |multicst|    | multicast|
    |  IP1   |    |   IP2    |
    `--------'    `----------'
        |______________|
         LAN | 
             |______________...
                     WAN              

**Future:** Server and Client, each one on a different site

    ,--------.   ,-------.    ,----------.
    | Server |   |       |    |new host  |
    |        |   |       |    |for Client|
    |   IP1  |   |       |    |   IP3    |
    `--------'   `-------'    `----------'
        |____________|            |___________...
           | LAN of site1            |LAN of site2
           |_________________________|
                        WAN

----------

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