[Bug 1292019] Re: ubuntu causes DHCP DOS attack during install

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: netcfg (Ubuntu)
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to netcfg in Ubuntu.
https://bugs.launchpad.net/bugs/1292019

Title:
  ubuntu causes DHCP DOS attack during install

Status in “netcfg” package in Ubuntu:
  Confirmed

Bug description:
  While installing ubuntu server 14.4 or older version 13 we have an DOS
  on DHCP

  During the install at the detect network IP using DHCP we have had
  issues where if this process is left on this screen overnight we have
  about 10 million DHCP request/decline events.  (a request every ~4ms)

  1.  click detect IP using DHCP... the bar goes across the screen then gives up...
  2.  leave the installer at the screen [retry network detection].
  3. /detection seems to still continue in a background process/

  This is extremely aggressive on our network.

  Please have someone look into this before the LTS release.

  Thanks.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/netcfg/+bug/1292019/+subscriptions