问题描述
我正在尝试使用两台Windows-7机器建立一个专用ipv6网络，以测试我的应用程序.我已经编写了一个示例代码来测试套接字api.我创建了一个IPv6套接字.当我尝试与本地链接地址(从 ipconfig 命令获得)进行绑定时，错误代码为10049.
I am trying to set-up a private ipv6 network with two windows-7 machines for tesing my application. I have written a sample code to test the socket apis. I have created an IPv6 socket. When I try to bind with the link-local address (which I get from ipconfig command), the error code is 10049.
请告知，为什么在Windows 7计算机中具有IPV6地址的 bind 失败了?
Please inform, why the bind with Ipv6 address is failing in windows-7 machine ?
推荐答案
如果您使用的是本地链接IPv6地址，则可能需要在sockaddr_in6结构中设置sin6_scope_id字段以指示您使用的接口想听.本地链接地址不明确，因为每个接口都必须分配有本地链接地址，并且它们都使用相同的前缀. (fe80::/64)
If you're using a link-local IPv6 address, you probably need to set the sin6_scope_id field in your sockaddr_in6 structure to indicate which interface you want to listen on. A link-local address is ambiguous, since every interface must have a link-local address assigned, and they all use the same prefix. (fe80::/64)
您可能应该将侦听套接字bind()设置为未指定的地址(全零或::)，因此这不是问题，但对于发送方而言仍然是一个问题.如果未指定sin6_scope_id，则系统将不知道将数据包发送到哪个接口.
You should probably bind() your listen socket to the unspecified address (all-zeroes or ::) so this isn't an issue, but it will still be a problem for the sending side. If you don't specify the sin6_scope_id, the system won't know which interface to send the packet on.
为避免出现此问题，最好设置一个可以执行路由器广告的IPv6路由器. >，因此您可以获得全局单播(或者至少是， 唯一的本地)地址.
To avoid the issue, it would be best to set up an IPv6 router that does router advertisements, so you can get global unicast (or, at a minimum, unique local) addresses.
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