* IPv6 support:
  - Ensure that the DUID-LLT is copied into the installed system.
  - When/If the DHCPv6 client is switched to dhclient, the following
    Ubuntu patch should be evaluated:
    revno: 1286
    committer: Stéphane Graber <stgraber@ubuntu.com>
    branch nick: ubuntu
    timestamp: Tue 2012-02-07 09:15:30 -0500
    message:
      Apply patch from Alec Warner making netcfg respect netcfg/dhcpv6_timeout
      and running dhclient in one-shot mode (-1).

* do other sorts of network configurations (ppp)

* pppconfig would be a good starting point for the ppp udeb.  There is also an
  example in there of how to use pppd to detect a modem.

* Make netcfg-static smarter about default values, e.g. call ifconfig and
  parse.