[Bug 1088682] Re: possible regression with isc-dhcp-client does not send hostnames in DHCPv6 by default

[Chris J Arges]

@stgraber
Ok. Looks like this isn't a regression, but more or less just broken for Windows dhcp. I'll collect some logs and more information here. Hopefully there is a way to get this working for both cases.

** Description changed:

- Issue:
- This has been seen in quantal, but appears to be working in precise.
+ This has been seen in quantal, but appears to be working in precise and
+ raring.
  
  A patch fixed an issue for bug 991360 where dhclient.conf was amended to include:
  send fqdn.fqdn = gethostname();
  
  This causes failures when the client tries to register was some DHCP servers (for example Windows AD DDNS servers).
  By commenting out this line and restarting the client, the client can then register with this type of DHCP server.
  
- The original issue was as follows:
- """
- DHCPv6 does not have a host-name option to send the client hostname to register with the DHCP server. There are several potential options here:
- 
- 1) Use the same "magic" to insert the hostname via fqdn.fqdn (i.e. "send fqdn.fqdn "<hostname>";" This should work with DHCPv4 as well.
- 2) Backport the gethostname() functionality from DHCP 4.2.
- 3) Upgrade to isc-dhcp-client 4.2.
- """
- 
- Because the quantal version is already at 4.2 we would expect (2) to be
- already working, and I wonder if (1) is still needed.
- 
- However reading the rest of the bug it isn't clear that gethostname() in
- 4.2 does actually fix the issue.
- 
- --
- 
- It would be great to have the original test case for bug 991360 to
- verify if running the latest quantal 4.2 version resolves the issue
- without this patch.
+ However, this is needed to ensure dhcpv6 works.

** Summary changed:

- possible regression with isc-dhcp-client does not send hostnames in DHCPv6 by default
+ dhclient does not register hostname to dynamic DNS (AD)

** Also affects: isc-dhcp (Ubuntu Quantal)
   Importance: Undecided
       Status: New

** Also affects: isc-dhcp (Ubuntu Raring)
   Importance: Medium
       Status: New

** Changed in: isc-dhcp (Ubuntu Quantal)
   Importance: Undecided => Medium

** Description changed:

- This has been seen in quantal, but appears to be working in precise and
- raring.
+ This is not working in quantal (4.2.4-1ubuntu10) and raring
+ (4.2.4-3ubuntu1), but is working in precise (4.1.ESV-R4-0ubuntu5).
  
  A patch fixed an issue for bug 991360 where dhclient.conf was amended to include:
  send fqdn.fqdn = gethostname();
  
  This causes failures when the client tries to register was some DHCP servers (for example Windows AD DDNS servers).
  By commenting out this line and restarting the client, the client can then register with this type of DHCP server.
  
  However, this is needed to ensure dhcpv6 works.

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https://bugs.launchpad.net/bugs/1088682

Title:
  dhclient does not register hostname to dynamic DNS (AD)

Status in “isc-dhcp” package in Ubuntu:
  New
Status in “isc-dhcp” source package in Quantal:
  New
Status in “isc-dhcp” source package in Raring:
  New

Bug description:
  This is not working in quantal (4.2.4-1ubuntu10) and raring
  (4.2.4-3ubuntu1), but is working in precise (4.1.ESV-R4-0ubuntu5).

  A patch fixed an issue for bug 991360 where dhclient.conf was amended to include:
  send fqdn.fqdn = gethostname();

  This causes failures when the client tries to register was some DHCP servers (for example Windows AD DDNS servers).
  By commenting out this line and restarting the client, the client can then register with this type of DHCP server.

  However, this is needed to ensure dhcpv6 works.

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