Public bug reported: When a device is not marked as 'auto' or allow-hotplug or allow-auto, but is 'inet manual', the interface is brought up, and it will have a link-local address. the ifup scripts are not run, and ifquery --state does not show it as up (both of which are correct), but the interfaces should not have been brought up.
% cat /etc/network/interfaces auto lo iface lo inet loopback iface eth0 inet manual % reboot % ifconfig eth0 Link encap:Ethernet HWaddr 00:16:3e:e5:c1:56 inet6 addr: fe80::216:3eff:fee5:c156/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:648 (648.0 B) TX bytes:648 (648.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:20 errors:0 dropped:0 overruns:0 frame:0 TX packets:20 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:1496 (1.4 KB) TX bytes:1496 (1.4 KB) % ifquery --state --all lo=lo ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ifupdown 0.8.10ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 Date: Thu Apr 21 15:45:27 2016 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) SourcePackage: ifupdown UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: ifupdown (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug uec-images xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573112 Title: inet manual sets device up with link local address without 'auto' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1573112/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs