我有以下标准配置：
- 连接到互联网的远程服务器，我只能使用 SSH 进行控制
- 在此服务器上，有一个 QEMU 实例
我正在尝试找到正确的配置，以便 QEMU 实例可以访问互联网（这样我就可以从 QEMU 下载文件）。
根据我所读到的内容，我必须使用 TAP 网络，但我不完全确定它是什么。
按照教程，我成功创建了一个“tap0”界面。另外，根据我一直关注的文档 [1]，我必须设置一个“桥”。然后我将接口“tap0”添加到网桥，并且我还应该添加物理接口“eth0”。不幸的是，一旦我将物理接口添加到网桥，我就会失去与服务器的 SSH 连接（我确实需要避免这种情况）。
有没有一种方法可以进行配置：
- 允许 QEMU 实例访问互联网
- 保持对服务器的 SSH 访问
- 最终将一些特定端口从主机转发到QEMU实例
编辑：我当前的/etc/network/interfaces：
auto tap0
iface tap0 inet static
pre-up tunctl -t tap0
address 192.168.101.1
netmask 255.255.255.0
auto br0
iface br0 inet static
address 192.168.1.10
network 192.168.1.1
netmask 255.255.255.0
broadcast 192.168.1.255
gateway 192.168.1.1
bridge_ports enp1s0 tap0
up brctl stp br0 on
ifconfig 的输出：
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 186.165.216.145 netmask 255.255.255.0 broadcast 188.165.215.255
inet6 2001:41d0:2:a28c:: prefixlen 64 scopeid 0x0<global>
inet6 fe80::225:90ff:fe7b:a1a0 prefixlen 64 scopeid 0x20<link>
ether 00:25:90:7b:a1:a0 txqueuelen 1000 (Ethernet)
RX packets 7463 bytes 785704 (767.2 KiB)
RX errors 0 dropped 3 overruns 0 frame 0
TX packets 471 bytes 48743 (47.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:58:62:89:a3 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 186.165.216.145 netmask 255.255.255.0 broadcast 188.165.215.255
ether 00:25:90:7b:a1:a0 txqueuelen 1000 (Ethernet)
RX packets 43202 bytes 6202060 (5.9 MiB)
RX errors 0 dropped 7 overruns 0 frame 0
TX packets 41815 bytes 13945866 (13.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0xfbce0000-fbd00000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Boucle locale)
RX packets 10792 bytes 11008366 (10.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10792 bytes 11008366 (10.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.101.1 netmask 255.255.255.0 broadcast 192.168.101.255
ether b2:ab:00:ed:63:bb txqueuelen 1000 (Ethernet)
RX packets 10 bytes 882 (882.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 801 bytes 50917 (49.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[1]http://www.shakthimaan.com/installs/debian-tun-tap-setup.html