我试图添加三个接口到一个KVM客人（我的托pipe服务提供商要求），并有一点运气！ 我一次只能得到一个工作的客人。 如果我在nmtui启用了一个适配器，而禁用CentOS 7 guest上的其他适配器，它将工作，但其他适配器将不再ping通。 我相信我对桥接工程的理解存在一些问题，并希望得到一些指导。
目标：在主机上设置网桥，在客户机上设置三个接口（服务器提供商分配MAC地址供我使用）
信息：
xxx.yyy.107.27 - assume main IP address of the Host machine xxx.yyy.107.1 - gateway for the above 255.255.255.192 - netmask for the above xxx.yyy.168.170 - IP address #1 for Guest xxx.yyy.168.171 - IP address #2 for Guest xxx.yyy.168.174 - IP address #3 for Guest xxx.yyy.168.169 - Gateway for IPs 1-3 given by Provider 255.255.255.248 - Netmask for IPs 1-3 given by Provider 00:50:56:00:a4:33 - MAC for IP 1 00:50:56:00:9a:97 - MAC for IP 2 00:50:56:00:ad:04 - MAC for IP 3
Debian 8主机/ etc / network / interfaces：
# Loopback device: auto lo iface lo inet loopback # eth0 auto eth0 iface eth0 inet manual iface eth0 inet6 static address 2a01:4f8:171:101a::2 netmask 64 gateway fe80::1 auto br0 iface br0 inet static address xxx.yyy.107.27 netmask 255.255.255.192 gateway xxx.yyy.107.1 broadcast xxx.yyy.107.63 bridge_ports eth0 bridge_fd 0 bridge_stp off bridge_waitport 0 bridge_hello 2 bridge_maxage 12
Libvirtnetworking：
<network> <name>Host</name> <forward mode='bridge'/> <bridge name='br0'/> </network>
来宾关于接口的XMLconfiguration：
<interface type='network'> <mac address='00:50:56:00:a4:33'/> <source network='Host'/> <model type='rtl8139'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <interface type='network'> <mac address='00:50:56:00:9a:97'/> <source network='Host'/> <model type='rtl8139'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </interface> <interface type='network'> <mac address='00:50:56:00:ad:04'/> <source network='Host'/> <model type='rtl8139'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </interface>
CentOS 7 Guest / etc / sysconfig / network-interfaces / ifcfg-eth0-1：
HWADDR=00:50:56:00:A4:33 TYPE=Ethernet BOOTPROTO=dhcp DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=yes IPV6_AUTOCONF=no IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no NAME=eth0 UUID=18f3808e-335a-4932-93e4-683b987ddc07 DEVICE=eth0 ONBOOT=yes PREFIX=32 PEERDNS=yes PEERROUTES=yes
CentOS 7 Guest / etc / sysconfig / network-interfaces / ifcfg-eth1：
HWADDR=00:50:56:00:9A:97 TYPE=Ethernet BOOTPROTO=dhcp DNS1=213.133.98.98 DNS2=213.133.99.99 DNS3=213.133.100.100 DEFROUTE=no IPV4_FAILURE_FATAL=yes IPV6INIT=yes IPV6_AUTOCONF=no IPV6_DEFROUTE=no IPV6_FAILURE_FATAL=no NAME=eth1 UUID=a2c6c1e3-bfb2-4401-99e0-40f723d6d713 DEVICE=eth1 ONBOOT=yes PEERDNS=yes PEERROUTES=yes
我没有看到第三个界面的任何文件，与networkingpipe理器有关？
Guest的/ etc / sysconfig / network：
GATEWAY=xxx.yyy.107.1
路由-n在游客输出：
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 xxx.yyy.168.169 0.0.0.0 UG 100 0 0 ens8 0.0.0.0 xxx.yyy.168.169 0.0.0.0 UG 101 0 0 eth0 xxx.yyy.168.168 0.0.0.0 255.255.255.248 U 100 0 0 ens8 xxx.yyy.168.169 0.0.0.0 255.255.255.255 UH 100 0 0 eth0 xxx.yyy.168.170 0.0.0.0 255.255.255.255 UH 100 0 0 eth0 188.40.24.199 xxx.yyy.168.169 255.255.255.255 UGH 100 0 0 ens8
在主机上路由-n输出：
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 xxx.yyy.107.1 0.0.0.0 UG 0 0 0 br0 xxx.yyy.107.0 0.0.0.0 255.255.255.192 U 0 0 0 br0
它看起来像我的桥只允许这些接口之一在任何时候到达外部世界。 我想解决这个问题，但我不确定是否有正确的设置和理解。 我可能已经设置了可怕的错误和奇怪的事情正在发生，所以感谢任何帮助。
编辑1：客人的ifconfig的事物的当前状态：
ens8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xxx.yyy.168.174 netmask 255.255.255.248 broadcast xxx.yyy.168.175 inet6 fe80::250:56ff:fe00:ad04 prefixlen 64 scopeid 0x20<link> ether 00:50:56:00:ad:04 txqueuelen 1000 (Ethernet) RX packets 6456 bytes 3735538 (3.5 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 4987 bytes 548563 (535.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xxx.yyy.168.170 netmask 255.255.255.248 broadcast xxx.yyy.168.170 inet6 fe80::250:56ff:fe00:a433 prefixlen 64 scopeid 0x20<link> ether 00:50:56:00:a4:33 txqueuelen 1000 (Ethernet) RX packets 1012 bytes 75375 (73.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 47 bytes 5110 (4.9 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xxx.yyy.168.171 netmask 255.255.255.248 broadcast xxx.yyy.168.175 inet6 fe80::250:56ff:fe00:9a97 prefixlen 64 scopeid 0x20<link> ether 00:50:56:00:9a:97 txqueuelen 1000 (Ethernet) RX packets 1048 bytes 77065 (75.2 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 22 bytes 2808 (2.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 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 0 (Local Loopback) RX packets 12243 bytes 1881497 (1.7 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 12243 bytes 1881497 (1.7 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
现在只有xxx.yyy.168.170可以从外面访问。 其余的甚至不在主机上。
主机的ifconfig：
br0 Link encap:Ethernet HWaddr f8:32:e4:71:a2:87 inet addr:xxx.yyy.107.27 Bcast:xxx.yyy.107.63 Mask:255.255.255.192 inet6 addr: fe80::fa32:e4ff:fe71:a287/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:20661927 errors:0 dropped:0 overruns:0 frame:0 TX packets:14207667 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3370784779 (3.1 GiB) TX bytes:2529369626 (2.3 GiB) eth0 Link encap:Ethernet HWaddr f8:32:e4:71:a2:87 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:22402779 errors:0 dropped:0 overruns:0 frame:0 TX packets:15423843 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4010564000 (3.7 GiB) TX bytes:2731403072 (2.5 GiB) 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:65536 Metric:1 RX packets:21145 errors:0 dropped:0 overruns:0 frame:0 TX packets:21145 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2619801 (2.4 MiB) TX bytes:2619801 (2.4 MiB) vnet0 Link encap:Ethernet HWaddr fe:50:56:00:a4:33 inet6 addr: fe80::fc50:56ff:fe00:a433/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2028 errors:0 dropped:0 overruns:0 frame:0 TX packets:7634 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1219855 (1.1 MiB) TX bytes:692099 (675.8 KiB) vnet1 Link encap:Ethernet HWaddr fe:50:56:00:9a:97 inet6 addr: fe80::fc50:56ff:fe00:9a97/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:49 errors:0 dropped:0 overruns:0 frame:0 TX packets:6348 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:5154 (5.0 KiB) TX bytes:520891 (508.6 KiB) vnet2 Link encap:Ethernet HWaddr fe:50:56:00:ad:04 inet6 addr: fe80::fc50:56ff:fe00:ad04/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5080 errors:0 dropped:0 overruns:0 frame:0 TX packets:12829 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:560230 (547.0 KiB) TX bytes:4342111 (4.1 MiB)
Hetzner幸运地告诉我，由于他们的过滤，一次只能有一个IP地址在虚拟机中处于活动状态（？）。 如果您从Hetzner订购了用于虚拟机的其他IP地址，则每个虚拟机在任何给定时间只能有一个IP地址。 要在虚拟机上有多个IP，Hetzner提供子网（目前最小/ 29）。 我希望这可以帮助任何有类似问题的人，因为这些问题在文档中没有列出。
编辑：这是“解决” – 我将需要等待几个小时才能接受我的答案。