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Old 05-28-2006, 10:00 PM   #1
Registered: May 2004
Posts: 552

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RHEL WS 4.0, ifconfig eth? down not working

On Redhat WS 4.0
I'm having a real problem with both eth0 and eth1.
ifconfig eth0 down and ifconfig eth1 down do not work.
# uname -a
Linux entropy 2.6.9-34.0.1.EL #1 Wed May 17 16:44:57 EDT 2006 i686 athlon i386 GNU/Linux

# ifconfig eth0 down
# dmesg
0000:01:06.0: tulip_stop_rxtx() failed
0000:01:06.0: tulip_stop_rxtx() failed
eth0: Setting half-duplex based on MII#1 link partner capability of 0021.
eth0: no IPv6 routers present

# ifconfig eth1 down
# dmesg
eth1: duplicate address detected!
lo is the only interface that can be brought up/down by ifconfig.
Note I don't think the half-duplex is a problem because my 10BT hub.
I have no idea why eth1 is saying duplicate addresses?
# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:04:5A:85:3C:8B
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::204:5aff:fe85:3c8b/64 Scope:Link
          RX packets:11575 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:6865 dropped:0 overruns:0 carrier:13634
          collisions:0 txqueuelen:1000
          RX bytes:7268790 (6.9 MiB)  TX bytes:0 (0.0 b)
          Interrupt:11 Base address:0x6000

eth1      Link encap:Ethernet  HWaddr 00:50:8D:4A:30:AD
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::250:8dff:fe4a:30ad/64 Scope:Link
          RX packets:56 errors:0 dropped:0 overruns:0 frame:0
          TX packets:64 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3504 (3.4 KiB)  TX bytes:3360 (3.2 KiB)
          Interrupt:10 Base address:0xa000

lo        Link encap:Local Loopback
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1743 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1743 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1593527 (1.5 MiB)  TX bytes:1593527 (1.5 MiB)

Last edited by J.W.; 05-28-2006 at 10:26 PM. Reason: Title update to clarify Redhat v4.0 versus RHEL WX v4.0
Old 05-29-2006, 02:50 AM   #2
Registered: Mar 2006
Distribution: BackTrack, RHEL, FC, CentOS, IPCop, Ubuntu, 64Studio, Elive, Dream Linux, Trix Box
Posts: 310

Rep: Reputation: 30
Hello randyding,

May be you do have duplicate addresses on your network:-

Check out if you have this address on other machines too:-


eth0: (Just in case)

Post if you find something


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