Arch linux: DHCPD 起動に失敗しました: ipv6_addaddr1: 該当デバイスはありません

Thinkpad x390にアーチLinuxのインストールを開始すると、インターネットに接続できなくなります。これは、dhcdpd サービスが失敗したためです。これはシステムログです。

john@arch-thinkpad ~> sudo systemctl status [email protected]
× [email protected] - dhcpcd on wlan0
     Loaded: loaded (/usr/lib/systemd/system/[email protected]; enabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Wed 2021-10-06 08:23:52 CEST; 3min 31s ago
    Process: 524 ExecStart=/usr/bin/dhcpcd -q -w wlan0 (code=exited, status=1/FAILURE)
        CPU: 35ms

říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: carrier acquired
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: IAID 54:b2:f8:91
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: adding address fe80::a212:1e5d:56d8:6d6f
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: ipv6_addaddr1: No such device
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: carrier lost
říj 06 08:23:52 arch-thinkpad dhcpcd[524]: ipv6_addaddr1: No such device
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: removing interface
říj 06 08:23:52 arch-thinkpad systemd[1]: [email protected]: Control process exited, code=exited, status=1/FAILURE
říj 06 08:23:52 arch-thinkpad systemd[1]: [email protected]: Failed with result 'exit-code'.
říj 06 08:23:52 arch-thinkpad systemd[1]: Stopped dhcpcd on wlan0.

次のようになりますdmesg -w。

[    2.387933] iwlwifi 0000:00:14.3: iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter

次のようになります/etc/modprobe.d/iwlwifi.conf。

options iwlwifi 11n_disable=1 swcrypto=1

ip monitor link数時間実行したときの結果は次のとおりです。

6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 5: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
7: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
7: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
7: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 7: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
8: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
8: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
8: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 8: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
9: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
9: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
9: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
Deleted 9: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
10: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
10: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
10: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
q6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 10: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
11: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
11: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
11: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff

実行するとsudo systemctl restart iwd.service && sudo dhcpcd wlan0再び動作を開始します。

この問題の原因は何であり、回避策は何ですか？