[Bug 695247] Re: dhcp3-client doesn't renew leases after suspend

[Brian J. Murrell]

This is not wishlist.  This is a bug.

It is absolutely invalid and wrong to just get onto a network and use an
address that was not either given to you manually by the network
administrator or obtained through some autoconfiguration tool such as
DHCP.  Therefore, using an IP address after it's lease has expired is
simply wrong, and very well likely a network policy violation.  In a
corporate environment this BUG could be exposing network users to the
risk of being sanctioned by their IT and security departments for
violating policies.

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https://bugs.launchpad.net/bugs/695247

Title:
  dhcp3-client doesn't renew leases after suspend

Status in “isc-dhcp” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: dhcp3-client

  After a suspend/resume, network interfaces are not reconfigured. After
  long suspend periods, machines will come up using addresses they may
  not have a lease for, and dhclient doesn't make a fresh request
  immediately. NetworkManager seems to have an appropriate script in
  place already, however users using the traditional interfaces
  configuration file will stomp on the network management.

  I have modified a pm-utils sleep.d script submitted to Fedora ( here:
  https://bugzilla.redhat.com/show_bug.cgi?id=479639 ) so that it can
  work with Debian-style configuration files. It is probably not robust,
  but seems to work fine with my configuration.

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