转：组播setsockopt:no such device问题的解决方法

five_kill

于 2014-09-08 11:37:04 发布

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本文详细解释了IP_ADD_MEMBERSHIP:Nosuchdevice错误的含义，指出这通常意味着尝试使用组播功能但网络接口不支持此功能。问题可能源于机器未启用组播功能或缺少针对组播流量的路由设置。文中提供了排查步骤及解决方案，包括检查虚拟机组播支持、为主机添加组播路由。

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What does "IP_ADD_MEMBERSHIP: No such device" mean?
It means that the tool is trying to use multicast but the network interface doesn't support it There are two likely causes:
·Your machine doesn't have multicast support enabled. For example, on Linux and FreeBSD it is possible to compile a kernel which doesn't support multicast.
·You don't have a route for multicast traffic. Some systems don't add this by default, and you need to run：
route add -net 224.0.0.0 netmask 224.0.0.0 eth0(or similar). If you wish to use RAT in unicast mode only, it is possible to add the multicast route on the loopback interface.

出现上诉问题的两种可能：

1.你的机器没有可用的组播功能（在ubuntu下通过ifconfig检查虚拟机是否支持本功能）。

2.没有为主机添加路由，有些系统不添加默认情况。你需要在终端下输入：route add -net 224.0.0.0 netmask 224.0.0.0 eth0(or similar).