Das Problem hat sich mit dem letzten vollständigen Update gelöst. Habe zur Sicherheit noch IPv6 abgesetellt. Wenigstens etwas. Dafür trennt jetzt wicd direkt nach dem Erhalt der IP-Adresse und dem Abgleich der Zeit per NTP die Verbindung sofort wieder. Es ist wie verhext.
Systemd sagt dazu folgendes:
Jul 27 11:10:28 hp161 dhclient[3076]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:28 hp161 wicd[567]: Throttling autoreconnectInternet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:28 hp161 wicd[567]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:28 hp161 wicd[567]: All rights reserved.
Jul 27 11:10:28 hp161 wicd[567]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:28 hp161 dhclient[3076]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:28 hp161 dhclient[3076]: All rights reserved.
Jul 27 11:10:28 hp161 dhclient[3076]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:28 hp161 dhclient[3076]:
Jul 27 11:10:28 hp161 dhclient[3076]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:28 hp161 wicd[567]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:28 hp161 wicd[567]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:28 hp161 wicd[567]: Sending on Socket/fallback
Jul 27 11:10:28 hp161 dhclient[3076]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:28 hp161 dhclient[3076]: Sending on Socket/fallback
Jul 27 11:10:28 hp161 dhclient[3076]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:28 hp161 wicd[567]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:28 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:28 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 wicd[567]: Failed to connect to non-global ctrl_ifname: wlan0 error: No such file or directory
Jul 27 11:10:29 hp161 dhclient[3090]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:29 hp161 wicd[567]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:29 hp161 wicd[567]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:29 hp161 wicd[567]: All rights reserved.
Jul 27 11:10:29 hp161 wicd[567]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:29 hp161 dhclient[3090]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:29 hp161 dhclient[3090]: All rights reserved.
Jul 27 11:10:29 hp161 dhclient[3090]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:29 hp161 dhclient[3090]:
Jul 27 11:10:29 hp161 dhclient[3090]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:29 hp161 wicd[567]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:29 hp161 wicd[567]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:29 hp161 wicd[567]: Sending on Socket/fallback
Jul 27 11:10:29 hp161 dhclient[3090]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:29 hp161 dhclient[3090]: Sending on Socket/fallback
Jul 27 11:10:29 hp161 dhclient[3090]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:29 hp161 wicd[567]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:29 hp161 wicd[567]: Failed to connect to non-global ctrl_ifname: wlan0 error: No such file or directory
Jul 27 11:10:29 hp161 wicd[567]: Error for wireless request "Set Bit Rate" (8B20) :
Jul 27 11:10:29 hp161 wicd[567]: SET failed on device %s ; No such device.
Jul 27 11:10:31 hp161 kernel: wlan0: authenticate with 80:1f:02:ab:87:07
Jul 27 11:10:31 hp161 kernel: wlan0: send auth to 80:1f:02:ab:87:07 (try 1/3)
Jul 27 11:10:31 hp161 kernel: wlan0: authenticated
Jul 27 11:10:31 hp161 kernel: wlan0: associate with 80:1f:02:ab:87:07 (try 1/3)
Jul 27 11:10:31 hp161 kernel: wlan0: RX AssocResp from 80:1f:02:ab:87:07 (capab=0x411 status=0 aid=1)
Jul 27 11:10:31 hp161 kernel: wlan0: associated
Jul 27 11:10:31 hp161 kernel: cfg80211: Regulatory domain changed to country: US
Jul 27 11:10:31 hp161 kernel: cfg80211: DFS Master region: FCC
Jul 27 11:10:31 hp161 kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Jul 27 11:10:31 hp161 kernel: cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 3000 mBm), (N/A)
Jul 27 11:10:31 hp161 kernel: cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2300 mBm), (N/A)
Jul 27 11:10:31 hp161 kernel: cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2300 mBm), (0 s)
Jul 27 11:10:31 hp161 kernel: cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2300 mBm), (0 s)
Jul 27 11:10:31 hp161 kernel: cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 3000 mBm), (N/A)
Jul 27 11:10:31 hp161 kernel: cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
Jul 27 11:10:32 hp161 dhclient[3117]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:32 hp161 dhclient[3117]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:32 hp161 dhclient[3117]: All rights reserved.
Jul 27 11:10:32 hp161 dhclient[3117]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:32 hp161 dhclient[3117]:
Jul 27 11:10:32 hp161 dhclient[3117]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:32 hp161 dhclient[3117]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:32 hp161 dhclient[3117]: Sending on Socket/fallback
Jul 27 11:10:32 hp161 dhclient[3117]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
Jul 27 11:10:39 hp161 dhclient[3117]: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
Jul 27 11:10:39 hp161 dhclient[3117]: DHCPREQUEST on wlan0 to 255.255.255.255 port 67
Jul 27 11:10:39 hp161 dhclient[3117]: DHCPOFFER from 172.23.0.1
Jul 27 11:10:39 hp161 dhclient[3117]: DHCPACK from 172.23.0.1
Jul 27 11:10:39 hp161 avahi-daemon[543]: Joining mDNS multicast group on interface wlan0.IPv4 with address 172.23.100.134.
Jul 27 11:10:39 hp161 avahi-daemon[543]: New relevant interface wlan0.IPv4 for mDNS.
Jul 27 11:10:39 hp161 avahi-daemon[543]: Registering new address record for 172.23.100.134 on wlan0.IPv4.
Jul 27 11:10:39 hp161 dhclient[3117]: bound to 172.23.100.134 -- renewal in 288 seconds.
Jul 27 11:10:39 hp161 dhclient[3128]: Killed old client process
Jul 27 11:10:39 hp161 wicd[567]: Killed old client process
Jul 27 11:10:40 hp161 dhclient[3128]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:40 hp161 wicd[567]: Internet Systems Consortium DHCP Client 4.3.4
Jul 27 11:10:40 hp161 wicd[567]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:40 hp161 wicd[567]: All rights reserved.
Jul 27 11:10:40 hp161 wicd[567]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:40 hp161 dhclient[3128]: Copyright 2004-2016 Internet Systems Consortium.
Jul 27 11:10:40 hp161 dhclient[3128]: All rights reserved.
Jul 27 11:10:40 hp161 dhclient[3128]: For info, please visit https://www.isc.org/software/dhcp/
Jul 27 11:10:40 hp161 dhclient[3128]:
Jul 27 11:10:40 hp161 dhclient[3128]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:40 hp161 dhclient[3128]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:40 hp161 wicd[567]: Listening on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:40 hp161 wicd[567]: Sending on LPF/wlan0/e4:f8:9c:a8:22:71
Jul 27 11:10:40 hp161 wicd[567]: Sending on Socket/fallback
Jul 27 11:10:40 hp161 dhclient[3128]: Sending on Socket/fallback
Jul 27 11:10:40 hp161 dhclient[3128]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:40 hp161 wicd[567]: DHCPRELEASE on wlan0 to 172.23.0.1 port 67
Jul 27 11:10:40 hp161 avahi-daemon[543]: Withdrawing address record for 172.23.100.134 on wlan0.
Jul 27 11:10:40 hp161 avahi-daemon[543]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 172.23.100.134.
Jul 27 11:10:40 hp161 avahi-daemon[543]: Interface wlan0.IPv4 no longer relevant for mDNS.
Jul 27 11:10:40 hp161 kernel: wlan0: deauthenticating from 80:1f:02:ab:87:07 by local choice (Reason: 3=DEAUTH_LEAVING)
Jul 27 11:10:41 hp161 kernel: cfg80211: World regulatory domain updated:
Jul 27 11:10:41 hp161 kernel: cfg80211: DFS Master region: unset
Jul 27 11:10:41 hp161 kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Jul 27 11:10:41 hp161 kernel: cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:41 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:41 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:41 hp161 kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
Jul 27 11:10:41 hp161 kernel: cfg80211: Regulatory domain changed to country: DE
Jul 27 11:10:41 hp161 kernel: cfg80211: DFS Master region: ETSI
Jul 27 11:10:41 hp161 kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Jul 27 11:10:41 hp161 kernel: cfg80211: (2400000 KHz - 2483500 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5150000 KHz - 5250000 KHz @ 80000 KHz, 200000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5250000 KHz - 5350000 KHz @ 80000 KHz, 200000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5470000 KHz - 5725000 KHz @ 160000 KHz), (N/A, 2698 mBm), (0 s)
Jul 27 11:10:41 hp161 kernel: cfg80211: (5725000 KHz - 5875000 KHz @ 80000 KHz), (N/A, 1397 mBm), (N/A)
Jul 27 11:10:41 hp161 kernel: cfg80211: (57000000 KHz - 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
Sieht für mich wie ein normaler, gewollter Verbindungsabbruch aus. Einen Grund dafür erkenne ich aber nicht.