enp2s0我在一个具有两个接口（以太网（ ）和 Wi-Fi（ ））的系统上安装了全新的 Ubuntu 20.04 wlp3s0。
在enp2s0界面上我设置了一个静态 IPv4 地址并wlp3s0使用 DHCP 进行 Internet 访问。
$ ip addr
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
valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 6c:3c:8c:27:6c:47 brd ff:ff:ff:ff:ff:ff
inet 192.168.100.222/24 brd 192.168.100.255 scope global noprefixroute enp2s0
valid_lft forever preferred_lft forever
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether bc:f4:d4:3e:8c:e7 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.112/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp3s0
valid_lft 64648sec preferred_lft 64648sec
inet6 fe80::61d3:a84f:b1d9:84ed/64 scope link noprefixroute
valid_lft forever preferred_lft forever
问题是，我需要接口上的 IPv6 链路本地地址enp2s0，但它没有分配任何 IPv6 地址，即使 IPv6 配置为“自动”。
尝试将 IPv6 模式设置为“link-local”，没有区别。
$ sudo nmcli connection show enp2s0
connection.id: enp2s0
connection.uuid: 34bae62f-1dea-4444-a526-208b929ac8bb
connection.stable-id: --
connection.type: 802-3-ethernet
connection.interface-name: enp2s0
connection.autoconnect: yes
connection.autoconnect-priority: 0
connection.autoconnect-retries: -1 (default)
connection.multi-connect: 0 (default)
connection.auth-retries: -1
connection.timestamp: 1697313910
connection.read-only: no
connection.permissions: --
connection.zone: --
connection.master: --
connection.slave-type: --
connection.autoconnect-slaves: -1 (default)
connection.secondaries: --
connection.gateway-ping-timeout: 0
connection.metered: unknown
connection.lldp: default
connection.mdns: -1 (default)
connection.llmnr: -1 (default)
connection.wait-device-timeout: -1
802-3-ethernet.port: --
802-3-ethernet.speed: 0
802-3-ethernet.duplex: --
802-3-ethernet.auto-negotiate: no
802-3-ethernet.mac-address: 6C:3C:8C:27:6C:47
802-3-ethernet.cloned-mac-address: --
802-3-ethernet.generate-mac-address-mask:--
802-3-ethernet.mac-address-blacklist: --
802-3-ethernet.mtu: auto
802-3-ethernet.s390-subchannels: --
802-3-ethernet.s390-nettype: --
802-3-ethernet.s390-options: --
802-3-ethernet.wake-on-lan: default
802-3-ethernet.wake-on-lan-password: --
ipv4.method: manual
ipv4.dns: --
ipv4.dns-search: --
ipv4.dns-options: --
ipv4.dns-priority: 100
ipv4.addresses: 192.168.100.222/24
ipv4.gateway: --
ipv4.routes: --
ipv4.route-metric: -1
ipv4.route-table: 0 (unspec)
ipv4.routing-rules: --
ipv4.ignore-auto-routes: no
ipv4.ignore-auto-dns: yes
ipv4.dhcp-client-id: --
ipv4.dhcp-iaid: --
ipv4.dhcp-timeout: 0 (default)
ipv4.dhcp-send-hostname: yes
ipv4.dhcp-hostname: --
ipv4.dhcp-fqdn: --
ipv4.dhcp-hostname-flags: 0x0 (none)
ipv4.never-default: no
ipv4.may-fail: yes
ipv4.dad-timeout: -1 (default)
ipv6.method: link-local
ipv6.dns: --
ipv6.dns-search: --
ipv6.dns-options: --
ipv6.dns-priority: 100
ipv6.addresses: --
ipv6.gateway: --
ipv6.routes: --
ipv6.route-metric: -1
ipv6.route-table: 0 (unspec)
ipv6.routing-rules: --
ipv6.ignore-auto-routes: no
ipv6.ignore-auto-dns: no
ipv6.never-default: yes
ipv6.may-fail: yes
ipv6.ip6-privacy: -1 (unknown)
ipv6.addr-gen-mode: stable-privacy
ipv6.ra-timeout: 0 (default)
ipv6.dhcp-duid: --
ipv6.dhcp-iaid: --
ipv6.dhcp-timeout: 0 (default)
ipv6.dhcp-send-hostname: yes
ipv6.dhcp-hostname: --
ipv6.dhcp-hostname-flags: 0x0 (none)
ipv6.token: --
proxy.method: none
proxy.browser-only: no
proxy.pac-url: --
proxy.pac-script: --
GENERAL.NAME: enp2s0
GENERAL.UUID: 34bae62f-1dea-4444-a526-208b929ac8bb
GENERAL.DEVICES: enp2s0
GENERAL.IP-IFACE: enp2s0
GENERAL.STATE: activated
GENERAL.DEFAULT: no
GENERAL.DEFAULT6: no
GENERAL.SPEC-OBJECT: --
GENERAL.VPN: no
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/554
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/5
GENERAL.ZONE: --
GENERAL.MASTER-PATH: --
IP4.ADDRESS[1]: 192.168.100.222/24
IP4.GATEWAY: --
IP4.ROUTE[1]: dst = 192.168.100.0/24, nh = 0.0.0.0, mt = 100
IP6.GATEWAY: --
我遗漏了什么？如何让 IPv6 正常工作enp2s0？