Re: dhclient: avoiding hostname disclosure via DHCP request

On Fri, 2014-01-03 at 22:59 +0000, Robert Horovitz wrote:
Hi Dan,

thanks for your reply.

If you're using 'keyfile' configuration files, you can add the line
"dhcp-send-hostname=false" to the [ipv4] block to prevent sending the
hostname to the DHCP server.  I don't believe it's exposed anywhere in
the nm-connection-editor UI at least.  Note that setting that option
does not prevent a custom dhclient.conf with "send host-name" from
working, so make sure it's not their either.

After reading your reply, I tried to add:


to /etc/NetworkManager/NetworkManager.conf
but that wasn't very successful.

There are not much files under /etc/NetworkManager at all.

Ah, sorry.  That block is for the connection files
in /etc/NetworkManager/system-connections, if that's where the
connection is stored.

If the connection is instead stored in an ifcfg file on Fedora or RHEL,
then you'll want to use "DHCP_SEND_HOSTNAME=no" in the ifcfg file for
the connection in /etc/sysconfig/network-scripts/


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