Possibly duplicate of bug 1487679.
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https://bugs.launchpad.net/bugs/1727687
Title:
systemd boots system offline ("Breaking ordering cycle by deleting job
network.target/stop")
Status in systemd package in Ubuntu:
New
Bug description:
Steps to reproduce:
1. Install Ubuntu 16.04 LTS
2. Install LTSP server (dnsmasq as proxy DHCP and tftp; NBD, SSH)
3. Reboot.
4. Boot system
Expected results:
* system boots to online
Actual results:
* system boots offline; it's a security vulnerability as denial of service
Interesting messages from syslog:
Oct 19 15:25:56 server systemd[1]: network-online.target: Found ordering
cycle on network-online.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
network.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
NetworkManager.service/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
basic.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
paths.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
cups.path/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
sysinit.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
nbd-client.service/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Found dependency on
network-online.target/stop
Oct 19 15:25:56 server systemd[1]: network-online.target: Breaking ordering
cycle by deleting job network.target/stop
Oct 19 15:25:56 server systemd[1]: network.target: Job network.target/stop
deleted to break ordering cycle starting with network-online.target/stop
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu19
ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79
Uname: Linux 4.4.0-93-generic i686
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: i386
CurrentDesktop: MATE
Date: Thu Oct 26 13:50:49 2017
InstallationDate: Installed on 2016-04-21 (552 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1)
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-93-generic
root=UUID=26069a01-c072-4021-83c5-f6df23dc51d5 ro net.ifnames=0 biosdevname=0
quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/09/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: FD
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: F2A55M-DS2
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrFD:bd01/09/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnF2A55M-DS2:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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