installed 12.04 network is not connecting to wire network

Asked by Bob

I have been betting my head agents the wall for 5 days now. have read to much about this and still wont work. I have installed 12.04 into a used Hp compaq dc 7100 cmt. plug in lan cable into the computer and it says network disconnected. from what I understand on the things I've read, it's not getting the address right, maybe it's just a guess (hardware address 00:16:35:78:47:bb) I know the lan cable is working I can get on the net with the old computer. (old computer is using device MAC address; Auto eth0 00:11:11:E6:4F:FE)
I have put this address into the newer HP and it shows last used (minutes ago) but no Internet sever not found,
I tried the hardware address it says never.
HELP please I feel and think this should be easy to fix. But I just don't know.

here is the info everyone has asked for, but they never say what I should do.

sudo lshw -C network; rfkill list; cat /etc/network/interfaces; cat /etc/lsb-release; lspci -nn; lsusb; uname -a;
ifconfig; route -n

*-network
               description: ethernet interface
               product; NetXtreme BCM5751 Gigabit Ethernet PCI Express
               vendor: Broadcom Corporation
               physical id: 0
               bus info: pci@0000:40:00.0
               logical name: eth0
              verson: 01
              serial: 00:16:35:78:47:bb
              size: 100Mbit/s
              capacity: 1Gbit/s
              width: 64 bits
              clock: 33MHz
              capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical
tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000-fd
              configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=
3.121 duplex=full firmware=5751-v3.29a latency=0 link=yes multicast=yes port=twi
sted pair speed=100Mbit/s
             resources: irq:17 memory:f0400000-f040ffff
auto lo
iface lo inet loopback

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION= "Ubuntu 12.04 LTS"
00:00.0 host bridge [0600]: Inter Corporation 82915G/P/GV/GL/PL/910GL Memory Con
troller Hub [8086:2580] (rev 04)
00.02.0 VGA compatible controller [0300]: Intel Corporation 82915G/GV/910GL inte
grated Graphics Controller [8086:2582] (rev 04)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
 PCI Express Port 1 [8086:2660] (rev 03)
00:1c.1 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
 PCI Express Port 2 [8086:2662] (rev 03)
00:1d.0 USB controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fam
ily) USB UHCI #1 [8086:2658] (rev 03)
00:1d.1 USB controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fam
ily) USB UHCI #2 [8086:2659] (rev 03)
00:1d.2 USB controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fam
ily) USB UHCI #3 [8086:265a] (rev 03)
00:1d.3 USB controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fam
ily) USB UHCI #4 [8086:265b] (rev 03)
00:1d.7 USB controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Fam
ily) USB2 UHCI Controller [8086:265c] (rev 03)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI bridge [8086:244e] (rev d
3)
00:1e.2 Multimedia audio controller [0401]: Intel Corporation 82801FB/FBM/FR/FW/
FRW (ICH6 Family) AC'97 Autio conrtroller [8086:266e] (rev 03)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801FB/RF (ICH6/ICH6R) LPC Interfa
ce Bridge [8086:2640] (rev 03)
00:1f.1 IDE interface [0101]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 fami
ly) IDE Controller [8086:266f] (rev 03)
00:1f.2 IDE interface [0101]: Intel Corporation 82801FB/FW (ICH6/ICH6W) SATA Con
troller [8086:2651] (rev 03)
40:00.0 Ethernet controller [0200]: Broadcom Corporation NetXreme BCM5751 Gigab
it Ethernet PCI Express [14e4:1677} (rev 01)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Linux bob-desktop 3.2.0-23-generic-pae #36-Ubuntu SMP Tpr 10 22:19:09 UTC 20
12 i686 i686 i386 GNU/Linux
eth0 Link encap:Ethernet HWaddr 00:16:35:78:47:bb
                    inet6 addr: fe80::216:35ff:47bb/64 Scope:link
                    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
                    RX packets:2517 errors:0 dropped:0 overruns:0 frame:0
                    TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
                    collisions:0 txqueuelen:1000
                   RX bytes:164508 (164.5 KB) TX bytes: 40884 (40.0 KB)
                   Interrupt:17

lo Link encap:Local loopback
                   inet addr:127.0.0.1 Mask:255.0.0.0
                   inet6 addr: ::1/128 Scope:Host
                   UP LOOPBACK RUNNING MTU:16436 Metric:1
                   RX packets:3290 errors:0 dropped:0 overruns:0 frame:0
                   TX packets:3290 errors:0 dropped:0 overruns:0 carrier:0
                   collisions:0 txqueuelen: 0
                   RX bytes:267212 (267.2 KB) TX bytes: 267212 (267.2 KB)

Kernel Ip routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

Question information

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Ubuntu gnome-nettool Edit question
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Bob
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Revision history for this message
actionparsnip (andrew-woodhead666) said :
#1

If you run:

sudo dhclient eth0

What is output?

Revision history for this message
Bob (smith13) said :
#2

this can't be good nothing happened the little box stops flashing

Revision history for this message
Bob (smith13) said :
#3

it went back to (desktop:-$) after a few minuets no info.

Revision history for this message
actionparsnip (andrew-woodhead666) said :
#4

So no reply?

What is the output of:

ip addr

Thanks

Revision history for this message
Bob (smith13) said :
#5

yeah no reply
here is ip addr

1: lo <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
       link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
       inet 127.0.0.1/8 scope hot lo
       inet6 ::1/128 scope host
            valid_lft forever preferred_lft forever
2: eth0: <BROADCAST ,MULTICAST ,UP ,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
       link/enter 00:16:35:78:47:BB brd ff:ff:ff:ff:ff:ff
       inet 169.254.7.172/16 brd 169.254.255.255 scope link eth0:avahi
       inet6 fe80::216:35ff:fe78:47bb/64 scope link
             valid_lft forever preferred_lft forever

Revision history for this message
Bob (smith13) said :
#6

3ed line is I missed the word host

  inet 127.0.0.1/8 scope host lo

Revision history for this message
Bob (smith13) said :
#7

plug in a NIC card to see if it was the port but still not connected to the Internet. but network connection 1 &2 says last used 3 minutes ago. boy am I at a lost on this one

Revision history for this message
Bob (smith13) said :
#8

I did more reading and I've found out that I may need to set the, DHCP to assign a addresses for the newer computer. something I have no clue about, I just thought I could plug it in and it would work. can anyone tell me what to do thank you.

Revision history for this message
Ubfan (ubfan1) said :
#9

The inet6 business indicates you are using ipv6, not the usual ipv4 -- is that what you really want? Try turning off ipv6, and things may start working. Click on the networkmanager icon, select edit connections, select wired, select your connection, select the ipv6 tab, and select the "ignore" from the dropdown list. Uncheck the connect automatically just to be sure. Then check on the ipv4 tab, and make sure you have DHCP selected (NOT the DHCP addresses only). Check the "available to all uses", and "connect automatically" boxes, and save.

Revision history for this message
Bob (smith13) said :
#10

The inet6 business indicates you are using ipv6, not the usual ipv4 -- is that what you really want?
 I have no clue what that means or what it will do. I just want it to work and get on the net.
I did everything you said even restarted no server found, nice try, you are the first one this week that has come up with something to try. if you want to see everything about this look at my last 4 questions. #209083, #209306, #209387, #209475 I keep asking because actionparsnip just stops chatting and never give a answer.

Revision history for this message
Bob (smith13) said :
#11

I found the fix turn off modem and unplug the power cord. Wait a minute plug power back in. it's the modem this model needs to reset for other computers to work off it.