584b7561c1
Currently there is no way to have DHCP agents not announce DNS servers for a subnet. The current behaviour when the dns_nameservers option is set to '0.0.0.0' is that each agent will only announce itself instead of announcing the list of all dhcp agents for that subnet, which seems not too useful. So we redefine the meaning of this option to instruct the DHCP agent to not announce any DNS server in that case. Actually, going back to square one, it would be more natural to swap the meaning of "option unset" and "option 0.0.0.0", but that would change the default behaviour for all existing installation and thus does not seem feasible. Change-Id: I32d943360162c483ac1364100a21ab56b13517fb Closes-Bug: 1311040
17 lines
727 B
YAML
17 lines
727 B
YAML
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prelude: >
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DNS server assignment can now be disabled in replies sent from the DHCP agent.
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features:
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- |
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It is now possible to instruct the DHCP agent not to supply any DNS server
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address to their clients by setting the ``dns_nameservers`` attribute for
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the corresponding subnet to ``0.0.0.0`` or ``::``, for IPv4 or IPv6 subnets
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(respectively).
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upgrade:
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The functionality when a subnet has its DNS server set to ``0.0.0.0`` or
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``::`` has been changed with this release. The old behaviour was that each
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DHCP agent would supply only its own IP address as the DNS server to its
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clients. The new behaviour is that the DHCP agent will not supply any DNS
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server IP address at all.
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