KVM/桥:没有路由到主机 [英] KVM/Bridge: No Route To Host

问题描述

我已经在Fedora 17上使用KVM设置了VM，并为KVM配置了桥接网络.主机和VM都使用手动IP配置，主机的IP为192.168.0.2，VM的为192.168.0.10. 从VM可以毫无问题地连接到主机，但是即使可以从主机ping KVM，也不能从主机SSH到VM.尝试ssh只会给我结果没有路由到主机".

I've setup a VM on Fedora 17 with KVM and have configured a bridge network for the KVM. Both the host and the VM use manual IP configuration, with the host's IP as 192.168.0.2, the VM's 192.168.0.10. From the VM I can connect to the host without any problems, but from the host I can't SSH to the VM,even though I still can ping the KVM from the host. Trying to ssh just gives me the result "no route to host".

哦，我禁用了iptables，所以我不认为这是防火墙的问题.

Oh, I have iptables disabled so I don't think this is the problem of the firewall.

推荐答案

还要确保已为内核配置了IP转发:

Also ensure that the kernel is configure for ip forwarding:

$ sudo sysctl -a | grep net.ipv4.ip_forward
net.ipv4.ip_forward = 1

它的值应为1，而不是0.如果需要，请使用以下命令启用:

It should have a value of 1, not 0. If needed, enable with these commands:

echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sudo sysctl -p /etc/sysctl.conf

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