On 2019-07-20 04:50 PM, Andrei Borzenkov wrote:

20.07.2019 17:10, James Knott пишет:

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Is there any way to force the DHCP client to do a full DHCP request, that is discover, offer, request, ack sequence?  Currently, if the client runs within the existing lease time, then it just does a request, ack.

I have tried dhclient -r, but that doesn't do it.  If fact, a packet capture shows it doesn't do anything, not even send the DHCP release to the server.

dhclient -r releases those leases that are recorded in leases database. Are you sure dhclient was used to configure interface in the first place?

I use whatever KDE Network Manager uses. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On 2019-07-20 05:13 PM, Andrei Borzenkov wrote:

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I use whatever KDE Network Manager uses.

So you need to provide the same options that KDE Network Manager uses.

Does NM provide a function to force a DHCP release?  I haven't seen it.  Does it use dhclient?  If not, what? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On 21/07/2019 06.45, Andrei Borzenkov wrote:

21.07.2019 0:20, James Knott пишет:

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On 2019-07-20 05:13 PM, Andrei Borzenkov wrote:

...

...

I use whatever KDE Network Manager uses.

So you need to provide the same options that KDE Network Manager uses.

Does NM provide a function to force a DHCP release?

I do not know.

...

  I haven't seen it.  Does it use dhclient?  If not, what?

It may use dhclient depending on what is installed and/or configured.

man NetworkManager.conf /dhcp

In my laptop here, I see the option is missing from the config file. That means it uses dhcient if installed, if not dhcpcd; if not installed, the internal. News to me, thanks. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)