Rick Stevens wrote:
Keven Ring wrote:
William Hooper wrote:
Satish Balay said:
Ah.. I interptered it as - an option to dhcp-clinet (not server) to
ignore what dhcp server says - and use the provided value as the
hostname. Perhpas there should be some other option for this
functionality? (RFE)
I don't like hostname changing (when you move laptop between networks)
- this changes xauth which messes up everything else..
A quick browse through the networking scripts suggests that the
hostname
will only change if it is "localhost". I haven't looked too hard
though. I know that I don't have a problem with my laptop, which I
set the
hostname on during install (but that was with RHL 9 and an upgrade to
FC1). It may be more of a case of the DHCP servers I'm using not
trying
to change the hostname, though.
It's in the /etc/sysconfig/network-scripts/network-functions script.
There is a function called need_hostname().
Returns 0 if the current hostname is "localhost",
"localhost.localdomain" or "(none)". Returns 1 otherwise. This
function is called in the /etc/sysconfig/network-scripts/ifup
script. However, again, just like everything else, just because the
DHCP client *requests* a hostname, does not mean that the DHCP server
is obliged to hand one back...
And you're not "obligated" to accept it. You can set
supersede host-name "your-host-name"
in your /etc/dhclient/dhclient.conf file to override whatever the DHCP
server gives you. see "dhclient.conf(5)" and "dhcp-options(5)" for
info.
Of course, if you tell the DHCP server what you want your hostname to
be, *and* ask for the DHCP server to provide one back to you, *and*
disregard the hostname that the DHCP server sends back, then you have an
awfully friendly system... :)
DHCP Client: Please set my host name to xxx.yyy.zzz.
DHCP Server: No chance. Your host name is aaa.bbb.ccc
DHCP Client: Screw you. I'm setting my hostname to mmm.nnn.ooo
Fine. Is everyone happy now?
--
Keven Ring | "Oh no, Not Again..."
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