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Re: DHCP client: dhclient vs dhcpcd ?

In article <>,
Thomas Mueller <> wrote:
>On Wed, Jan 31, 2018 at 1:18 PM, KIRIHARA Masaharu <> wrote:
>> NetBSD has two DHCP clients; dhclient(8) and dhcpcd(8).
>> What's the difference?
>> Which is better to use?
>On Wed, 31 Jan 2018 13:47:42 +0100, Benny Siegert responded:
>> I agree that this is confusing. dhclient is the older tool, while
>> dhcpcd has been created by a NetBSD developer, is newer and smaller. I
>> have run into situations (on Google Compute Engine for instance) where
>> dhclient was unable to interpret some of the more modern DHCP
>> features.
>> I recommend using dhcpcd :)
>I have read about NetBSD planning to drop dhclient in favor of dhcpcd.
>I have had installations where dhcpcd succeeded where dhclient failed,
>and (7.99.1 amd64) where dhclient succeeded where dhcpcd failed.
>Failure means not being able to set up the internet connection even if
>the command ran without error messages.
>I have also had a situation where neither dhcpcd nor dhclient could
>establish the internet connection, but I was able to connect by using
>ifconfig and route directly.
>I notice NetBSD's dhclient is very big while FreeBSD's dhclient is much
>smaller, like 
>$ ls -l /sbin/dhclient
>-r-xr-xr-x  1 root  wheel  100056 Jul 31  2017 /sbin/dhclient
>$ ls -l /media/zip0/sbin/dh*
>-r-xr-xr-x  1 root  wheel  5352184 Jun 20  2017 /media/zip0/sbin/dhclient
>-r-xr-xr-x  1 root  wheel     6221 Jun 20  2017 /media/zip0/sbin/dhclient-script
>-r-xr-xr-x  1 root  wheel   299176 Jun 20  2017 /media/zip0/sbin/dhcpcd

Run ldd on them and then add the sizes of the shared libraries they use.

>FreeBSD uses dhclient in base system, which does not include dhcpcd.

I don't think that we will remove the isc dhcp code from base since we
still need it for dhcpd :-)


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