macos script (linux)

[Daniel Le]

Thanks Glenn.

I hope to be able to use a common dhclient.conf file to make things
simpler. I will need to do some testing to see if I can mix and match
various client interface options in the same config file. For example:

# Common configuration and options
timeout 60;
select-timeout 5;
script "/sbin/dhclient-script";

# Interface-specific options
interface "eth0" {
          send dhcp6.rapid-commit;
}
interface "eth1" {
          request dhcp6.oro 1, 2, 7, 12, 39;
}
...

-----Original Message-----
From: dhcp-users-bounces at lists.isc.org
[mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of Glenn Satchell
Sent: Thursday, November 05, 2009 5:55 PM
To: dhcp-users at lists.isc.org
Subject: RE: macos script (linux)

Hi Daniel

If you use separate dhclient.conf then you also need separate lease and
pid files. There are options for these in the dhcpd and dhclient man
pages.

regards,
-glenn

>Date: Thu, 5 Nov 2009 15:34:50 -0500
>From: "Daniel Le" <daniel.le at exfo.com>
>
>David, please see my answers inline.
>
>Also a few questions, if you don't mind:
>1. When I run one dhclient process per network interface, is it better
>to have a common client config file with interface-specific info
>enclosed in interface "eth0" {...}, or separate config files?
>2. I notices in my testing that the dhclient.leases file is common.
>Additional leases are appended at the end. However, new dhclient
process
>Id overwrites an existing PID in the dhclient.pid file, thus only the
>last process id is saved. Is this intended?
>3. I'm not sure how "dhclient -r" works. The command does not kill the
>dhclient process and dhclient.leases does not remove the address that
>was leased.
>
>-----Original Message-----
>From: dhcp-users-bounces at lists.isc.org
>[mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of David W. Hankins
>Sent: Thursday, November 05, 2009 2:24 PM
>To: Users of ISC DHCP
>Subject: Re: macos script
>
>On Mon, Nov 02, 2009 at 11:17:29PM -0500, Daniel Le wrote:
>> An add-on note: in reading the output again, I realized that the 
>> client does receive advertisements from the server, re. RCV:
Advertise
>
>> message on eth0 from fe80::21e:f7ff:fe84:85c3.
>
>Yes, your server is advertising that it has no addresses to give.
>
>The client doesn't want a lease without addresses...
>
>The output here is what your server is sending in the error message
>string at the end of the status code option the server supplies:
>
>> IA_NA status code NoAddrsAvail: "NOADDRS-AVAIL"
>
>I think the helpful text your server is providing is pretty lame.
>
>In the ISC DHCPv6 server for example it would look like:
>
>| IA_NA status code NoAddrsAvail: "No addresses available for this
>interface."
>
>[DL] Indeed. It was a DHCPv6 server (Cisco router C3750) pool
>configuration issue and has been corrected in my test environment.
>
>> 5. What does " ip: either "dev" is duplicate, or "permanent" is a 
>> garbage" refer to?
>
>News to me.  That placement in the client's processing is at the start
>when it wants to initialize the interface - flush any previous
>configuration out.  So it is probably semi harmless in that you might
>not notice a problem from it.
>
>Can you do /sbin/ip -V for me?  We can see if there's a different,
>backwards compatible syntax we can use.
>
>[DL] I'm using the ip utility that is included in BusyBox v1.1.3, and
>unfortunately this compact version of ip does not handle the option -V
>to display its version.
>[DL] I tried to flush all previous IP addresses, brought the interface
>down and back up, but still was not able to make the message 'ip:
either
>"dev" is duplicate, or "permanent" is a garbage' go away. The lease was
>nevertheless successful. FYI, I run udhcpc client on the same network
>interface for DHCPv4 addresses.
>
>-- 
>David W. Hankins	BIND 10 needs more DHCP voices.
>Software Engineer		There just aren't enough in our heads.
>Internet Systems Consortium, Inc.		http://bind10.isc.org/
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