dhcpcd-discuss

Re: Get address of dhcp server in hook

Roy Marples

Thu May 17 08:24:53 2018

Hi Stephan

On 17/05/2018 08:34, Stephan Höme wrote:
is it possible to get the IP address of the DHCPv6 server in the hook script? I could not find an environment variable with the IP(v6) address?

No, it's currently not possible and I'm not sure it's entirely desirable either.

We *could* export the LL address of the node that sent us the reply, but this might be a relay and not a server. There might be more than one server in use and the server that sends us the reply goes down and the other server takes over.

Saying that, there is the UNICAST option (12) which holds an IPv6 address the client *should* unicast replies to.
If the server sets that, dhcpcd will export it.

Is that acceptable? If not, what is your use case for wanting the server IP address?

Roy

References:
Get address of dhcp server in hookStephan Höme
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