[Bug 838968] Re: static-network-up event does not wait for interfaces to have an address

[Clint Byrum]

** Changed in: ifupdown (Ubuntu)
       Status: New => Triaged

** Changed in: ifupdown (Ubuntu)
   Importance: Undecided => High

** Changed in: ifupdown (Ubuntu)
    Milestone: None => ubuntu-11.10-beta-2

** Changed in: ifupdown (Ubuntu)
     Assignee: (unassigned) => Scott Moser (smoser)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ifupdown in Ubuntu.
https://bugs.launchpad.net/bugs/838968

Title:
  static-network-up event does not wait for interfaces to have an
  address

Status in “ifupdown” package in Ubuntu:
  Triaged

Bug description:
  cloud-init's /etc/init/cloud-init-nonet.conf is configured to block
  running of cloud-init.conf until "static-network-up" is emitted.

  The point of that event was to wait until interfaces were all
  configured, and thus the network available.

  In practice, what I'm seeing is that for dhcp interfaces configured like:
     # The primary network interface
     auto eth0
     iface eth0 inet dhcp

  ifupdown runs /etc/network/if-up.d/upstart immediately upon forking
  off dhclient.

  
  $ ls -ld --full-time /var/run/network/static-network-up-emitted
  drwxr-xr-x 2 root root 40 2011-09-01 12:21:26.778833999 -0400 /var/run/network/static-network-up-emitted

  Then, in /var/log/syslog, the first non-kernel messages for this boot start at 12:21:28.  relevant dhcp messages are:
  Sep  1 12:21:29 mabolo dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
  Sep  1 12:21:30 mabolo kernel: [   10.885045] bnx2 0000:02:00.0: eth0: NIC Copper Link is Up, 1000 Mbps full duplex
  Sep  1 12:21:30 mabolo kernel: [   10.886232] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
  Sep  1 12:21:36 mabolo dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
  ...
  Sep  1 12:22:13 mabolo dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
  Sep  1 12:22:13 mabolo dhclient: DHCPOFFER of 10.55.55.5 from 10.55.55.7
  Sep  1 12:22:13 mabolo dhclient: DHCPREQUEST of 10.55.55.5 on eth0 to 255.255.255.255 port 67
  Sep  1 12:22:14 mabolo dhclient: DHCPACK of 10.55.55.5 from 10.55.55.7
  Sep  1 12:22:14 mabolo dhclient: can't create /var/lib/dhcp3/dhclient.eth0.leases: No such file or directory
  Sep  1 12:22:14 mabolo dhclient: bound to 10.55.55.5 -- renewal in 1399 seconds.

  
  So it would surely appear that the event is happening immediately.
  However, to test this theory, I put the following into /etc/network/if-up.d/myfootest, and set up 'eth1' in /etc/network/interfaces.. (I knew that there would be no response on eth1's interface.)
  #!/bin/sh

  (
  echo "===== $(date -R) ====="
  echo "IFACE=$IFACE LOGICAL=$LOGICAL ADDRFAM=$ADDRFAM METHOD=$METHOD MODE=$MODE PHASE=$PHASE"
  ifconfig $IFACE
  )  | tee -a /var/log/myfoo.log

  exit 0

  
  Then, i ran 'sudo ifup eth1' and that took almost exactly 1 minute before writing the log and to the screen.  One difference  between the two is that eth1 is not attached to a device per ethtool.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: ifupdown 0.7~alpha5.1ubuntu3
  ProcVersionSignature: User Name 3.0.0-9.15-virtual 3.0.3
  Uname: Linux 3.0.0-9-virtual i686
  Architecture: i386
  Date: Thu Sep  1 17:02:21 2011
  Ec2AMI: ami-00000070
  Ec2AMIManifest: FIXME
  Ec2AvailabilityZone: nova
  Ec2InstanceType: m1.small
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/838968/+subscriptions