The Wifi on the German train model ICE4 does not work any more for my debian unstable. Without me updating my system, it stopped working. Here the logs:

# wpa_cli status
Selected interface 'wlp2s0'
bssid=f8:0f:6f:d9:6b:f0
freq=5220
ssid=WIFIonICE
id=0
mode=station
wifi_generation=4
pairwise_cipher=NONE
group_cipher=NONE
key_mgmt=NONE
wpa_state=COMPLETED
p2p_device_address=XXX
address=XXX
uuid=XXX

# dmesg | tail -40
[388669.210133] wlp2s0: authenticate with f8:0f:6f:d9:6b:f0
[388669.220391] wlp2s0: send auth to f8:0f:6f:d9:6b:f0 (try 1/3)
[388669.222335] wlp2s0: authenticated
[388669.223608] wlp2s0: associate with f8:0f:6f:d9:6b:f0 (try 1/3)
[388669.227175] wlp2s0: RX AssocResp from f8:0f:6f:d9:6b:f0 (capab=0x101 status=0 aid=23)
[388669.227411] wlp2s0: associated
[388669.229580] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[388681.015288] e1000e 0000:00:19.0 enp0s25: NIC Link is Down
[388729.985341] wlp2s0: deauthenticating from f8:0f:6f:d9:6b:f0 by local choice (Reason: 3=DEAUTH_LEAVING)
[388893.258963] wlp2s0: authenticate with f8:0f:6f:d9:6b:f0
[388893.270837] wlp2s0: send auth to f8:0f:6f:d9:6b:f0 (try 1/3)
[388893.272268] wlp2s0: authenticated
[388893.273612] wlp2s0: associate with f8:0f:6f:d9:6b:f0 (try 1/3)
[388893.276627] wlp2s0: RX AssocResp from f8:0f:6f:d9:6b:f0 (capab=0x101 status=0 aid=17)
[388893.276771] wlp2s0: associated
[388893.279160] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready

# dhclient -v wlp2s0 
Internet Systems Consortium DHCP Client 4.4.3
Listening on LPF/wlp2s0/00:0e:8e:67:00:fd
Sending on   LPF/wlp2s0/00:0e:8e:67:00:fd
Sending on   Socket/fallback
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 6
No DHCPOFFERS received.
No working leases in persistent database - sleeping.