我有一个在 virtualbox 下运行的虚拟机，在该虚拟机中我有一个 LXC 容器，我正在尝试桥接到 virtualbox 的 NAT 接口：
------------- ----------- ----------- ---------- ----------
| LXC | ---> | Host OS | ---> | Virtual | ---> | Laptop | ---> | Router |
| Container | | Linxu | | Box | | | | |
------------- ----------- ----------- ---------- ----------
eth0 10.1.0.35 br0 <-> eth0 NAT GW: 192.168.1.33 GW:
gw 10.1.0.2 br0 10.1.0.5 10.1.0.2/16 192.168.1.1
gw 10.1.0.2
Ping 10.1.0.2 ping 10.1.0.2
FAIL OK
我无法从 LXC 容器 ping 到 virtualbox 网关，但可以从主机操作系统 ping 通。
注意：tcpdump在主机操作系统上运行，我可以唱从容器发送到路由器的 ping，以及从路由器到容器的回复，但tcpdump在容器上显示没有流量。
LXC eth0
eth0 Link encap:Ethernet HWaddr 00:16:3e:ed:82:b8
inet addr:10.1.0.35 Bcast:10.1.255.255 Mask:255.255.0.0
inet6 addr: fe80::216:3eff:feed:82b8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:585 errors:0 dropped:0 overruns:0 frame:0
TX packets:588 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:58003 (58.0 KB) TX bytes:56447 (56.4 KB)
主机操作系统：
root@ubuntuserver:/# ifconfig
br0 Link encap:Ethernet HWaddr 08:00:27:ca:5f:7a
inet addr:10.1.0.5 Bcast:10.1.255.255 Mask:255.255.0.0
inet6 addr: fe80::a00:27ff:feca:5f7a/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:2012 errors:0 dropped:0 overruns:0 frame:0
TX packets:882 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:158794 (158.7 KB) TX bytes:139083 (139.0 KB)
eth0 Link encap:Ethernet HWaddr 08:00:27:ca:5f:7a
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:2968 errors:0 dropped:0 overruns:0 frame:0
TX packets:2404 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:281188 (281.1 KB) TX bytes:312109 (312.1 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:180 errors:0 dropped:0 overruns:0 frame:0
TX packets:180 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:14376 (14.3 KB) TX bytes:14376 (14.3 KB)
vethStvXMU Link encap:Ethernet HWaddr fe:9a:36:3a:84:1c
inet6 addr: fe80::fc9a:36ff:fe3a:841c/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:557 errors:0 dropped:0 overruns:0 frame:0
TX packets:554 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:53465 (53.4 KB) TX bytes:55003 (55.0 KB)
root@ubuntuserver:/# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.080027ca5f7a no eth0
vethStvXMU
答案1
尝试添加以下 iptables 规则：
iptables -A POSTROUTING -s 10.1.0/24 -o vmbr0 -j SNAT --to-source 148.251.79.108
iptables -A POSTROUTING -s 192.168.10.0/24 -o vmbr0 -j MASQUERADE