KVM 橋接介面未啟動 - inet, inet6 , bridge

我正在設置 KVM 主機，它將有多個從外部可見的虛擬機，其/etc/network/interfaces配置與此 類似

# The loopback network interface

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

iface eth0 inet6 static
 address 2001:0000:1004:1019::
 netmask 64
 post-up /sbin/ip -family inet6 route add 2001:0000:1004:10ff:ff:ff:ff:ff dev eth0
 post-up /sbin/ip -family inet6 route add default via 2001:0000:1004:10ff:ff:ff:ff:ff
 pre-down /sbin/ip -family inet6 route del default via 2001:0000:1004:10ff:ff:ff:ff:ff
 pre-down /sbin/ip -family inet6 route del 2001:0000:1004:10ff:ff:ff:ff:ff dev eth0


auto br0
iface br0 inet static
 address 41.100.60.25
 netmask 255.255.255.0
 network 41.100.60.0
 broadcast 41.100.60.255
 gateway 41.100.60.254
 bridge_ports eth0
 bridge_maxwait 12
 bridge_fd 9
 bridge_hello 2
 bridge_maxage 12
 bridge_stp off

 dns-nameservers 8.8.8.8
 dns-search ovh.net

 post-up ip link set br0 address xx:xx:xx:xx:xx:xx

 post-up ip addr add 164.123.123.123/32 dev br0 broadcast 164.123.123.123
 post-down ip addr del 164.123.123.123/32 dev br0

 post-up ip route add default via 41.100.60.254 dev br0
 post-down ip route del default via 41.100.60.254 dev br0

 post-down brctl delbr br0

並且 eth0 和 br0 介面最終都被調出（它們工作）但是當我查看引導螢幕時我看到了這一點（由於某種原因它不在引導日誌中）：

Waiting for network configuration
Waiting upto 60 more seconds for network configuration"
Booting system without full network configuration

另外當我跑步時

ifquery --state

或者

cat /run/network/ifstate

我可以看到缺少 eth0 和 br0

lo=lo

編輯1：

通過使用以下命令

ifup br0 --no-act

如果您願意，我會得到以下正在執行的命令集ifup br0

run-parts  /etc/network/if-pre-up.d
ip addr add 41.100.60.25/255.255.255.0 broadcast 41.100.60.255    dev br0 label br0
ip link set dev br0   up
ip route add default via 41.100.60.254  dev br0 
ip link set br0 address xx:xx:xx:xx:xx:xx
ip addr add 164.123.123.123/32 dev br0 broadcast 164.123.123.123
ip route add default via 41.100.60.254 dev br0
run-parts  /etc/network/if-up.d

這告訴我這個命令被重複了

ip route add default via 41.100.60.254 dev br0

所以從我的配置中刪除它之後

post-up ip route add default via 41.100.60.254 dev br0
post-down ip route del default via 41.100.60.254 dev br0

我可以看到

run-parts  /etc/network/if-pre-up.d
ip addr add 41.100.60.25/255.255.255.0 broadcast 41.100.60.255    dev br0 label br0
ip link set dev br0   up
ip route add default via 41.100.60.254  dev br0 
ip link set br0 address xx:xx:xx:xx:xx:xx
ip addr add 164.123.123.123/32 dev br0 broadcast 164.123.123.123
run-parts  /etc/network/if-up.d

這解決了我執行時重新啟動後缺少 br0 的問題

ifquery --state
# or
cat /run/network/ifstate

因為我可以看到

lo=lo
br0=br0

我決定暫時刪除 inet6 靜態配置，所以在“編輯 1”之後我很好。

我認為在執行 ifup 和 ifdown 時，為 inet 和 inet6 配置了兩種不同類型的配置，例如“靜態”和“手動”會導致一些命令重複。

引用自：https://unix.stackexchange.com/questions/267863