Comment 0 for bug 1531184

My dnsmasq instance uses "interface=br-vz0" and the interface br-vz0 is managed manually in /etc/network/interfaces.

During boot, dnsmasq is started before br-vz0 is created and this causes dnsmasq to exit:

Jan 5 08:56:16 simon-laptop dnsmasq[1008]: dnsmasq: unknown interface br-vz0
Jan 5 08:56:16 simon-laptop dnsmasq[1008]: unknown interface br-vz0
Jan 5 08:56:16 simon-laptop dnsmasq[1008]: FAILED to start up
Jan 5 08:56:17 simon-laptop NetworkManager[937]: <info> NetworkManager (version 1.0.4) is starting...
...
Jan 5 08:56:18 simon-laptop NetworkManager[937]: <info> interface-parser: parsing file /etc/network/interfaces
...
Jan 5 08:56:18 simon-laptop NetworkManager[937]: <info> found bridge ports none for br-vz0
Jan 5 08:56:18 simon-laptop NetworkManager[937]: <info> adding bridge port none to eni_ifaces
Jan 5 08:56:18 simon-laptop NetworkManager[937]: <info> management mode: unmanaged

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: dnsmasq 2.75-1
ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
Uname: Linux 4.3.0-5-generic x86_64
ApportVersion: 2.19.3-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jan 5 09:53:30 2016
PackageArchitecture: all
SourcePackage: dnsmasq
UpgradeStatus: No upgrade log present (probably fresh install)