Public bug reported:
Ubuntu doesn't change IP over DHCP when you quickly switch to another
network. How to reproduce: use 2 routers with different DHCP pools
configured. When you change your patch cord from one to another quickly,
then system will not change it's own IP address and you can't access
network because you have wrong IP for this network. It can be same
problem as described in another bug:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1687089
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: network-manager 1.4.4-1ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Mon May 1 16:06:53 2017
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2017-04-25 (5 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
IpRoute:
default via 192.168.40.1 dev enp0s25 proto static metric 100
169.254.0.0/16 dev enp0s25 scope link metric 1000
192.168.40.0/24 dev enp0s25 proto kernel scope link src 192.168.40.198 metric
100
NetworkManager.conf:
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
CONNECTION CON-UUID CON-PATH
enp0s25 ethernet connected /org/freedesktop/NetworkManager/Devices/1
З’єднання Ethernet 1 f021ebe1-6abd-4196-bc04-ec7b5a5fe598
/org/freedesktop/NetworkManager/ActiveConnection/6
wlp6s0 wifi unavailable /org/freedesktop/NetworkManager/Devices/2 --
-- --
lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 --
-- --
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI
WWAN-HW WWAN
running 1.4.4 connected started full enabled enabled
disabled enabled enabled
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug zesty
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https://bugs.launchpad.net/bugs/1687430
Title:
Ubuntu doesn't change IP over DHCP when you quickly switch to another
network
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