Azure 从每个子网中保留一些 IP 用于路由目的:

Azure reserves a few IP's from each subnet for routing purposes:

是的.Azure 在每个子网中保留一些 IP 地址.子网的第一个和最后一个 IP 地址保留用于协议一致性，另外还有 3 个地址用于 Azure 服务.

Yes. Azure reserves some IP addresses within each subnet. The first and last IP addresses of the subnets are reserved for protocol conformance, along with 3 more addresses used for Azure services.

参考:https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq

因此，您需要在分配 IP 时考虑到这一点.因此，在您的情况下，您有 10.100.8-15，减去保留的 ips - 10.100.11-14.

So you would need to account for that when assigning IP's. So in your case you have 10.100.8-15, substract reserved ips - 10.100.11-14.