debian11/12 系统如何开启 ipv6

发表于 更新于 阅读次数： Waline：

debian 系统默认只配置了 ipv4, 参考 v2ex上的一篇讨论，快速 dhcp ipv6

获取网卡名称

执行 ip a 命令列出网卡，可以看到这时候我们的系统只有以 fe80 开始的内网 ipv6，记下网卡名，可以使用 cat /etc/network/interfaces 核对网卡名

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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 9a:ee:cb:04:72:98 brd ff:ff:ff:ff:ff:ff
    altname enp2s0
    inet 192.168.2.2/24 brd 192.168.2.255 scope global dynamic eno2
       valid_lft 39162sec preferred_lft 39162sec
    inet6 fe80::9aee:cbff:fe04:7298/64 scope link
       valid_lft forever preferred_lft forever

新增 z.network

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sudo mv /etc/network/interfaces /etc/network/interfaces.save

# 查看网卡名，并修改下边的enp0s3

sudo sh -c "echo '[Match]
Name=enp0s3

[Network]
DHCP=yes' >> /etc/systemd/network/z.network"

重启网络服务

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sudo systemctl enable systemd-networkd
sudo systemctl restart systemd-networkd
sudo systemctl status systemd-networkd

检查 ip a

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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 95:ee:cb:02:72:38 brd ff:ff:ff:ff:ff:ff
    altname enp2s0
    inet 192.168.2.2/24 brd 192.168.2.255 scope global dynamic eno2
       valid_lft 39162sec preferred_lft 39162sec
    inet6 2408:8110:xxx:xxx:xxx:xxx:fe04:7298/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 210634sec preferred_lft 124234sec
    inet6 fe80::9aee:cbff:fe04:7298/64 scope link
       valid_lft forever preferred_lft forever