Steam not able to see network

[Joe Barnett]

Steam is unable to see the network in yakkety. Downloads stall and don't do anything; and trying to update steam results in a "Fatal Error: Steam needs to be online to update. Please confirm your network connection and try again" dialog box.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: steam:i386 1:1.0.0.52-5ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-21.23-generic 4.8.0
Uname: Linux 4.8.0-21-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Oct 10 07:43:55 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-08-21 (416 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150819)
PackageArchitecture: i386
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: steam
UpgradeStatus: Upgraded to yakkety on 2016-09-29 (10 days ago)

[Joe Barnett (thejoe)]

possibly caused by switch to systemd-resolved?

[Joe Barnett (thejoe)]

installing libnss-resolve:i386 appears to fix this. should steam depend on it, or should the amd64 package automatically install the i386 package as well, or is there another solution to make this automatic?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Le Gluon Du Net (legluondunet)]

I also encountered this bug on Ubuntu Zesty 17.04 after upgraded from 16.10:
Steam did not find network, I couldn't download games or consult messages.
I follow #3 Joe Barnett's solution, I installed libnss-resolve:i386 and it resolved the bug.
To resolve definitly this bug, Ubuntu should install libnss-resolve:i386 when Steam is installed.
Why there is no dependency between Steam and libnss-resolve:i386 packages?

[Le Gluon Du Net (legluondunet)]

Two bugs were open on Valve Github about this:
https://github.com/ValveSoftware/steam-for-linux/issues/4661
https://github.com/ValveSoftware/steam-for-linux/issues/4743
But they are are now closed: this is not a Steam bug, but Debian/Ubuntu package dependency bug.