[Bug 1445084] [NEW] neutron-dhcp-agent send 0x03 dhcp flag to a client

[Michael Kazakov]

Public bug reported:

If the client is a virtial host with Window introduced in the AD domain. The client does not send dns updates on AD server because neutron-dhcp-agent sends 0x03 dhcp flag in response. 
Client request:

Option: (81) Client Fully Qualified Domain Name
Length: 23
Flags: 0x00
0000 .... = Reserved flags: 0x00
.... 0... = Server DDNS: Some server updates
.... ..0. = Server overrides: No override
.... ...0 = Server: Client
A-RR result: 0
PTR-RR result: 0
Client name: dnstest.local

Server respose:

Option: (81) Client Fully Qualified Domain Name
Length: 30
Flags: 0x03
0000 .... = Reserved flags: 0x00
.... 0... = Server DDNS: Some server updates
.... .0.. = Encoding: ASCII encoding
.... ..1. = Server overrides: Override
.... ...1 = Server: Server
A-RR result: 255
PTR-RR result: 255
Client name: host-172-25-43-40.local

Because of this windows host does not send update dns requests on AD
server and after certain time out server remove client hostname from DNS
zone.

** Affects: neutron (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1445084

Title:
  neutron-dhcp-agent send 0x03 dhcp flag to a client

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