I've had the same problem on two computers since upgrading from 16.04 to 16.10, in both cases killing dnsmasq after the first suspend fixes it and it stays fixed after subsequent suspends.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1633912 Title: Problem with DNS resolution after suspend Status in network-manager package in Ubuntu: Confirmed Bug description: I upgraded my laptop to 16.10 yesterday. Sometimes after suspend I have network issues, one time I was not able to connect to a wifi network (might report another bug if this occurees again, but maybe it is related, as in network-manager is in some broken state after suspend). Here is whats happening pretty often: After resume from suspend I have a solid network connection, no problem to ping machines in LAN or on the internet. But DNS resolution is broken until I restart the network-manager service. I ran ubuntu-bug while DNS was broken, so if anything gets log-ed it should be in there. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: network-manager 1.2.4-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0 Uname: Linux 4.8.0-22-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Sun Oct 16 21:01:09 2016 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2016-09-28 (18 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IpRoute: default via 192.168.0.1 dev wlp58s0 proto static metric 600 169.254.0.0/16 dev br-541a0f9bec93 scope link metric 1000 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 172.18.0.0/16 dev br-541a0f9bec93 proto kernel scope link src 172.18.0.1 192.168.0.0/24 dev wlp58s0 proto kernel scope link src 192.168.0.118 metric 600 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: Upgraded to yakkety on 2016-10-15 (1 days ago) nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.2.4 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1633912/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
