Mobile phone hotspot unusable due to systemd-resolved not liking the DNS
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
systemd (Ubuntu) |
Expired
|
Undecided
|
Unassigned | ||
Focal |
Expired
|
Undecided
|
Unassigned | ||
Groovy |
Expired
|
Undecided
|
Unassigned |
Bug Description
Seen in 20.04.
Trying to connect to the internet using the mobile phone hotspot is impossible due to systemd-resolved not resolving and reporting things like:
resolve call failed: DNSSEC validation failed: incompatible-server
and
systemd-
DNSSEC validation failed for question b.d.e.1.
etc etc.
Name resolution works just fine from the mobile phone.
Funny thing is that the issue persists if DNSSEC is disabled via resolvectl for the interface:
Link 3 (wlan0)
Current Scopes: DNS
DefaultRoute setting: yes
LLMNR setting: yes
MulticastDNS setting: no
DNSOverTLS setting: opportunistic
DNSSEC setting: no
DNSSEC supported: no
Current DNS Server: 192.168.43.1
DNS Servers: 192.168.43.1
Systemd-resolved won't accept the issue to be reported upstream saying that a too old version of systemd is being used.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: systemd 245.4-4ubuntu3.5
ProcVersionSign
Uname: Linux 5.8.0-45-generic x86_64
ApportVersion: 2.20.11-
Architecture: amd64
CasperMD5CheckR
CurrentDesktop: KDE
Date: Mon Mar 22 15:39:23 2021
EcryptfsInUse: Yes
InstallationDate: Installed on 2020-02-16 (400 days ago)
InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: SCHENKER SCHENKER_
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /usr/lib/
[EXTENDED] /usr/lib/
2 overridden configuration files found.
UpgradeStatus: Upgraded to focal on 2020-05-23 (303 days ago)
dmi.bios.date: 10/02/2019
dmi.bios.release: 7.4
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: 1.07.04RTR1
dmi.board.
dmi.board.name: N141CU
dmi.board.vendor: SCHENKER
dmi.board.version: Not Applicable
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Notebook
dmi.chassis.
dmi.ec.
dmi.modalias: dmi:bvnINSYDECo
dmi.product.family: Not Applicable
dmi.product.name: SCHENKER_
dmi.product.sku: Not Applicable
dmi.product.
dmi.sys.vendor: SCHENKER
modified.
mtime.conffile.
mtime.conffile.
Have you tried disabing resolved DNSSEC completely (not only for one interface) to see if your mobile hotspot works then?