topic Re: error in configuring loopback interface during system boot in Operating System - HP-UX

error in configuring loopback interface during system boot

Rodel D. Bautista — Thu, 18 Dec 2003 15:13:08 GMT

Hi, I have this error encountered during system boot but the LAN card is owrking since an error is displayed in the console when i remove the UTP cable and also the HW state indicated via lanscan and ioscan says it is up. How can I fix this problem?

thanks in advance.

Re: error in configuring loopback interface during system boot

Ashwani Kashyap — Thu, 18 Dec 2003 15:15:39 GMT

check to see if this entry is there in /etc/hosts file

127.0.0.1 localhost loopback

Re: error in configuring loopback interface during system boot

Hazem Mahmoud_3 — Thu, 18 Dec 2003 15:17:12 GMT

First thing I would do is to check your /etc/hosts file for the following line:
127.0.0.1 localhost loopback

-Hazem

Re: error in configuring loopback interface during system boot

Steven E. Protter — Thu, 18 Dec 2003 15:17:40 GMT

Put the cable back in.

You may need to restart the server or the network.

That message is detection of the problem. I've run into scenarios when this message required reboot to clear.

The message in itself is usually informational.

What is the ACTUAL hardware state: Claimed NO_HW.

If it stays NO_HW its probably boot time.

SEP

Re: error in configuring loopback interface during system boot

Hazem Mahmoud_3 — Thu, 18 Dec 2003 15:18:38 GMT

Wow Ashwani, once I hit submit, I saw that you had the same thought as I did. Great minds think alike:)

-Haze

Re: error in configuring loopback interface during system boot

Rodel D. Bautista — Thu, 18 Dec 2003 15:33:22 GMT

the HW state says its UP and /etc/hosts contains the line 127.0.0.1 loopback localhost

Re: error in configuring loopback interface during system boot

Rodel D. Bautista — Thu, 18 Dec 2003 15:37:39 GMT

i did try to reboot but it actually fails in the configuring of loopback interface during system boot. the cable is already installed. i tried also to do ifconfig lo0 and it says its up and running. for ifconfig lan0, it says no such interface since it also failed in configuring the LAN interface during boot time.

Re: error in configuring loopback interface during system boot

Dave Hutton — Thu, 18 Dec 2003 15:39:20 GMT

What does the ioscan -fnClan show as the hardware state?

Re: error in configuring loopback interface during system boot

Dave Hutton — Thu, 18 Dec 2003 15:43:21 GMT

Sorry never mind my question. I saw the answer. =/

Re: error in configuring loopback interface during system boot

Rodel D. Bautista — Thu, 18 Dec 2003 15:48:50 GMT

the ifconfig lo0 command has the output that says the interface is up and running
the ifconfig lan0 command has the output that says no such interface

Re: error in configuring loopback interface during system boot

Hazem Mahmoud_3 — Thu, 18 Dec 2003 15:51:01 GMT

Try taking a look at /etc/rc.config.d/netconf and see if it is not set up properly. Specifically look at the LOOPBACK_ADDRESS variable. This file is checked during bootup.

-Hazem

Re: error in configuring loopback interface during system boot

Rodel D. Bautista — Thu, 18 Dec 2003 16:05:10 GMT

the loopback address is set.

when i tried checking the /etc/rc.log file to check the error, it says that
ERROR: lo0 interface: ifconfig: check plumbing error: Bad file Number

invalid tunable names for tcp_*
udp_*

failed to set ndd tunable parameters

what does this error mean?

Re: error in configuring loopback interface during system boot

Hazem Mahmoud_3 — Thu, 18 Dec 2003 16:09:29 GMT

According to the below post, the kernel was corrupt and the person had to rebuild the kernel. That should fix it for you. I hope that helps.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=192363

-Hazem

Re: error in configuring loopback interface during system boot

Murgesh_2 — Fri, 19 Dec 2003 01:06:11 GMT

did u checked the /etc/rc.config.d/netconf
check the hostname and loopback

Murgesh

Re: error in configuring loopback interface during system boot

James Lynch — Fri, 19 Dec 2003 09:20:40 GMT

What is the exact error message you are getting?
Also, are there any other errors durring bootup?
You can look in /etc/rc.log file and seach for errors and warinings.

An unplugged cable should have no impact on the loopback interface. Cables are only relevant for physical LANS like lan0.

JL

Re: error in configuring loopback interface during system boot

Rodel D. Bautista — Fri, 19 Dec 2003 20:50:51 GMT

here are the lines where the error occurred:

Configure Loopback interfaces (lo0)
Output from "/sbin/rc2.d/S008net.init start":
----------------------------
ERROR: lo0 interface: ifconfig: check plumbing error: Bad file number
invalid tunable names, tcp_time_wait_interval for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_wroff_xtra for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_old_urp_interpretation for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_keepalives_kill for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_conn_request_max for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_ip_abort_cinterval for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_ip_abort_interval for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_rexmit_interval_min for this modules,
for a list of valid names, use name '?'
invalid tunable names, tcp_ip_ttl for this modules,
for a list of valid names, use name '?'
invalid tunable names, udp_wroff_extra for this modules,
for a list of valid names, use name '?'
invalid tunable names, udp_pass_up_icmp for this modules,
for a list of valid names, use name '?'
invalid tunable names, udp_pass_up_options for this modules,
for a list of valid names, use name '?'
invalid tunable names, udp_def_ttl for this modules,
for a list of valid names, use name '?'
ERROR: Failed to set ndd tunable parameters
"/sbin/rc2.d/S008net.init start" FAILED

Configure LAN interfaces
Output from "/sbin/rc2.d/S340net start":
----------------------------
ERROR: lan0 interface: ifconfig: check plumbing error: Bad file number
ERROR: Failed to add route entry because its interface is not
yet initialized. May need to add this route entry with
a route commad after the interface is up :
add net default: gateway 192.168.150.250: Network is unreachable
"/sbin/rc2.d/S340net start" FAILED

i hope this messages will give you info on the problem.

thanks in advance.

Re: error in configuring loopback interface during system boot

Ron Kinner — Mon, 22 Dec 2003 07:08:14 GMT

Get the latest ARPA patch for your system. I remember reading about this same bug just recently while looking through the arpa patch release notes.

Ron

Re: error in configuring loopback interface during system boot

James Lynch — Mon, 22 Dec 2003 08:08:24 GMT

I suspect that you have more than 10 entries in your /etc/rc.config.d/nddconf file. There is a probelem with ndd parsing more thatn 10 entries in this file. http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000071732617

has more details. If that link does not work, then refer to Document id: KBRC00013007

JL