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Re: DHCP client with minimal functionality and size
On 2008年1月17日 15:18:29 +0100
Joerg Sonnenberger <joerg%britannica.bec.de@localhost> wrote:
> On Wed, Jan 16, 2008 at 04:26:10PM +0000, Roy Marples wrote:
> > > Just to clarify - so in this model unplugging and
> > > replugging in an ethernet cable would be expected to run a script
> > > which would kill and potentially restart dhcpdc?
> > >
> >
> > Yes, as there is no guarantee the the cable you unplugged is the
> > same one you plug in. For example, you could be configuring your
> > network based on arpinging set gateways. Here's a sample config you
> > could achieve with this in Gentoo.
>
> This is exactly why I asked for the DHCP client to deal with this.
> Keep the currently configured lease and try to validate it / get a
> new one. This is what Windows is doing with the exception of dropping
> the old lease when it can't get a new one. This is the most sensible
> behaviour.
>
Right, but it might be a better approach to build something more like
network manager to handle this. I agree that the current dhclient does
that very badly.
--Steve Bellovin, http://www.cs.columbia.edu/~smb
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