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Re: dhclient and dhcp update require restart?

On 08/27/2009 07:49 PM, David Cantrell wrote:
Hash: SHA1

On Wed, 26 Aug 2009, Dariusz J. Garbowski wrote:

Hi, something that bothers me a bit... More and more system restart
requests with each update (even if one doesn't use the package at the

Is this necessary for dhclient and dhcp update packages to require
Wouldn't "service network restart" and "service dhcpd restart" in the
scripts do the trick (after checking that the service is actually
Ssh used to do that since, well, as far as I remember.

Yes, 'service dhcpd restart' will work fine for dhcpd. For dhclient, it's
not necessarily as simple as restarting the network service. If you are
the network service, that will work fine. If you are using NetworkManager,
you'll need to either restart NetworkManager or have it down the connection
you're using dhclient on and bring it back up.

Why is a restart of NetworkManager necessary in this case? If dhclient reinitializes the interface and gets the old dhcp data then nothing really changes and NetworkManager shouldn't have to care. If e.g. der IP changes then NetworkManager should detect that and reinitialize the connection info on its end (after all the "new" interface might not be connected to anything and thus have to be marked as down anyway).


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