error in configuring loopback interface during system boot

[Hazem Mahmoud_3]

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

[Rodel D. Bautista]

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?

[Hazem Mahmoud_3]

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

[Murgesh_2]

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

Murgesh

[James Lynch]

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

[Rodel D. Bautista]

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.

[Ron Kinner]

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

[James Lynch]

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