可能是一个简单的答案，但我似乎找不到它。我正在运行多宿主 Debian Stable（最新），并且在接口 eth1 上我需要 IPv4 和 IPv6 地址。我的 /etc/network/interfaces 看起来像这样：
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
up ip -6 address add 2001:470:28:5b2::1/64 dev $IFACE
问题是接口只分配了 IPv4 地址，而不是 IPv6 地址。我缺少什么？
跑步时ifup-av：
g00nz@debie:~$ sudo ifup -av
[sudo] password for g00nz:
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
Configuring interface eth1=eth1 (inet)
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
ip addr add 192.168.1.2/255.255.255.0 broadcast 192.168.1.255 dev eth1 label eth1
RTNETLINK answers: File exists
Failed to bring up eth1.
run-parts --exit-on-error --verbose /etc/network/if-up.d
run-parts: executing /etc/network/if-up.d/avahi-daemon
run-parts: executing /etc/network/if-up.d/mountnfs
run-parts: executing /etc/network/if-up.d/openssh-server
run-parts: executing /etc/network/if-up.d/upstart
run-parts: executing /etc/network/if-up.d/wpasupplicant
似乎 eth1 已配置，我无法添加 IPv6 地址，但当我从 bashprompt 执行此操作时，它可以工作：
sudo ip -6 addr add 2001:470:28:5b2::1/64 dev eth1
并检查ifconfig eth1：
g00nz@debie:~$ sudo ip -6 addr add 2001:470:28:5b2::1/64 dev eth1
g00nz@debie:~$ sudo ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:24:9b:08:4b:aa
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: 2001:470:28:5b2::1/64 Scope:Global
inet6 addr: fe80::224:9bff:fe08:4baa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4254 errors:0 dropped:2080 overruns:0 frame:0
TX packets:305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:469773 (458.7 KiB) TX bytes:45395 (44.3 KiB)
任何人？ :(
/罗杰
好的，尝试一下，现在将其添加到我的 /etc/network/interfaces 中：
auto eth1
iface eth1 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
iface eth1 inet6 static
address 2001:470:28:5b2::1
netmask 64
但是，当我检查时ip 一个我有：
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:24:9b:08:4b:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.1.2/24 brd 192.168.1.255 scope global eth1
valid_lft forever preferred_lft forever
inet6 fe80::224:9bff:fe08:4baa/64 scope link
valid_lft forever preferred_lft forever
我不坚持:(
ifup 仍然出现错误：
g00nz@debie:~$ sudo ifup -av
[sudo] password for g00nz:
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
Configuring interface eth1=eth1 (inet)
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
ip addr add 192.168.1.2/255.255.255.0 broadcast 192.168.1.255 dev eth1 label eth1
RTNETLINK answers: File exists
Failed to bring up eth1.
run-parts --exit-on-error --verbose /etc/network/if-up.d
run-parts: executing /etc/network/if-up.d/avahi-daemon
run-parts: executing /etc/network/if-up.d/mountnfs
run-parts: executing /etc/network/if-up.d/openssh-server
run-parts: executing /etc/network/if-up.d/upstart
run-parts: executing /etc/network/if-up.d/wpasupplicant
g00nz@debie:~$
答案1
您的ifup程序可能无法运行，因为接口已经具有 IPv4 地址并且无法添加两次。它甚至不会到达 IPv6 线路。如果可以的话，您应该关闭该接口，以便删除所有地址，然后再次打开它。
配置 IPv6 应该以不同的方式完成：
auto eth1
iface eth1 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
iface eth1 inet6 static
address 2001:470:28:5b2::1
netmask 64
如果需要，您还可以添加网关。
PS：很多人好像不知道，其实netmask 24IPv4也可以用。你不必拼写出来netmask 255.255.255.0。