It's a bit weird, https://launchpadlibrarian.net/602981658/nmcli-dev.txt
shows no connection associated to the usb device nor IP for it
** Changed in: network-manager (Ubuntu)
Status: Incomplete => New
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Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1975549
Title:
NetworkManager uses tethered Android phone as ethernet connection
instead of wired ethernet connection
Status in network-manager package in Ubuntu:
New
Bug description:
I'm running Kubuntu 22.04 LTS, x86_64, fully patched. I've been having
trouble the last week or two ssh'sing into the machine, and printing
from the machine when I am sitting at the keyboard. I also could not
connect to my external firewall when sitting at the keyboard.
I keep a Google Pixel 4a tethered to the USB hub for charging. The
Android phone is running Android 12, and the phone is set to "USB
Tethering". The phone is fully patched, too.
I found if I reboot the machine with the phone tethered, then the
machine uses the Android phone as the ethernet connection. It
literally calls the connection "ethernet", as if it was using the
network adapter. This is new behavior over the last week or two.
This is unexpected behavior for three reasons. First, it is new
behavior. Second, the wired gigabit ethernet connection is not used by
default. And thrid, the Android phone's connection is called
"ethernet" instead of something more meaningful like "USB" or
"Android" or "wired hotspot".
The third item ("ethernet" name when using Android phone) was
misleading enough to waste a lot of time troubleshooting the issue. I
thought I had an odd firewall issue or a mDNS issue.
The reason I was having so many troubles, like printing and ssh, is
the Android phone uses Wifi and it is on a different VLAN and subnet
to keep traffic segregated from my trusted internal network.
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It looks like I am running network-manager via systemd:
# service systemd-networkd status
● systemd-networkd.service - Network Service
Loaded: loaded (/lib/systemd/system/systemd-networkd.service; disabled;
vendor prese>
Active: inactive (dead)
Docs: man:systemd-networkd.service(8)
# service network-manager status
● NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled;
vendor preset: >
Active: active (running) since Mon 2022-05-23 21:16:52 EDT; 59min ago
Docs: man:NetworkManager(8)
Main PID: 928 (NetworkManager)
Tasks: 3 (limit: 76693)
Memory: 12.0M
CGroup: /system.slice/NetworkManager.service
└─928 /usr/sbin/NetworkManager --no-daemon
...
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2022-02-05 (107 days ago)
InstallationMedia: Kubuntu 20.04.3 LTS "Focal Fossa" - Release amd64
(20210819.1)
IpRoute:
default via 172.16.1.1 dev enp4s0 proto dhcp metric 100
169.254.0.0/16 dev enp4s0 scope link metric 1000
172.16.0.0/12 dev enp4s0 proto kernel scope link src 172.16.2.10 metric 100
Package: network-manager 1.22.10-1ubuntu2.3
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.13.0-44.49~20.04.1-generic 5.13.19
Tags: focal
Uname: Linux 5.13.0-44-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
nmcli-con:
NAME UUID TYPE TIMESTAMP
TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY READONLY
DBUS-PATH ACTIVE DEVICE STATE
ACTIVE-PATH SLAVE FILENAME
Ethernet 5d31ea14-c1cd-318f-a982-09ce6723dadb ethernet 1653403311 Tue 24
May 2022 10:41:51 AM EDT yes -100 no
/org/freedesktop/NetworkManager/Settings/1 yes enp4s0 activated
/org/freedesktop/NetworkManager/ActiveConnection/4 --
/etc/NetworkManager/system-connections/Ethernet.nmconnection
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW
WIFI WWAN-HW WWAN
running 1.22.10 connected started full enabled enabled
enabled enabled enabled
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