dhcp and static ip conflicts. - The UNIX and Linux Forums

		The UNIX and Linux Forums > Special Forums > IP Networking
dhcp and static ip conflicts.

google unix.com

IP Networking Learn TCP/IP, Internet Protocol, Routing, Routers, Network protocols in this UNIX and Linux forum.

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
How to configure DHCP to Static IP	lee30320	IP Networking	5	01-27-2009 03:56 AM
How do we fix the library conflicts?	Hangman2	AIX	1	06-26-2008 05:43 PM
Software Dependencies Conflicts	RobSand	SUN Solaris	2	11-09-2007 05:45 PM
HP-UX 10.xx Changing from static IP to DHCP	Steelysteel	HP-UX	1	08-27-2007 05:55 PM
Memory conflicts	ghoti	UNIX for Advanced & Expert Users	1	12-05-2001 12:44 PM


	Powered by

LinkBack

Thread Tools

Search this Thread

Rate Thread

Display Modes

#1 (permalink)

10-27-2008

ts97783

Registered User

Join Date: Oct 2008

Posts: 2

dhcp and static ip conflicts.

I have a USB Wireless Adapter using the rum0 driver. All I want to do is set a perminent static IP for the onboard wired interface elxl0. I can plumb the wired interface up fine on the fly, but when I try to save the static IP over a reboot, I lose the IP address assigned to rum0 from my wireless router. See below;

1)This ouput is before I set the static IP on elxl0. At this point I have an assigned IP from my Wireless router and can connect to the internet using rum0 (my USB adapter)

Code:

ts97783@GX150:~$ more /etc/release
                        OpenSolaris 2008.05 snv_86_rc3 X86
           Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                             Assembled 26 April 2008
ts97783@GX150:~$ ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
    inet 127.0.0.1 netmask ff000000 
elxl0: flags=201004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4,CoS> mtu 1500 index 2
    inet 0.0.0.0 netmask ff000000 
rum0: flags=201004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4,CoS> mtu 1500 index 3
    inet 192.168.0.3 netmask ffffff00 broadcast 192.168.0.255
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
    inet6 ::1/128

2) Next I manually plumb elxl0 with a static IP and ping the host connected to the interface - I do get "invalid argument" but the IP is still accepted. At this point I can STILL connect to the internet using rum0;

Code:

ts97783@GX150:~# ifconfig elxl0 inet 192.168.1.1 netmask 255.255.255.0 broadcast 127.0.0.255
ifconfig: SIOCSLIFBRDADDR: elxl0: Invalid argument
ts97783@GX150:~# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
    inet 127.0.0.1 netmask ff000000 
elxl0: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2
    inet 192.168.1.1 netmask ffffff00 broadcast 192.168.1.255
    ether 0:6:5b:25:77:e 
rum0: flags=201004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4,CoS> mtu 1500 index 3
    inet 192.168.0.3 netmask ffffff00 broadcast 192.168.0.255
    ether 0:1e:8c:99:aa:3f 
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
    inet6 ::1/128 
ts97783@GX150:~# ping 192.168.1.2
192.168.1.2 is alive

3) Now I attempt to save my static IP on elxl0 accross reboots, I am creating a hostname.elxl0 in /etc and rebooting.

Code:

ts97783@GX150:/# cd /etc
ts97783@GX150:/etc# echo 192.168.1.1 > hostname.elxl0
ts97783@GX150:/etc# more hostname.elxl0
192.168.1.1
ts97783@GX150:/etc# init 6

4) After the reboot, the static IP is remembered but I lose the IP from my router assigned to rum0. No more web browsing for me.

Code:

ts97783@GX150:~# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
    inet 127.0.0.1 netmask ff000000 
elxl0: flags=201004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4,CoS> mtu 1500 index 2
    inet 192.168.1.1 netmask ffffff00 broadcast 192.168.1.255
    ether 0:6:5b:25:77:e 
rum0: flags=201000802<BROADCAST,MULTICAST,IPv4,CoS> mtu 1500 index 3
    inet 0.0.0.0 netmask 0 
    ether 0:1e:8c:99:aa:3f 
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
    inet6 ::1/128

This problem is causing me sleepless nights.

As soon as I delete the hostname.elxl0 file from etc and reboot. I am given an IP from my router and am back on the internet again using rum0

Can anyone explain this???

Thanks

Last edited by ts97783; 10-27-2008 at 06:20 PM..

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode	Rate This Thread: