[SOLVED] NetworkManager 0.8 auto configuration not working

mackg · 07-11-2010, 05:28 PM

Hello,

I just installed Linux for the first time and I'm having some internet connection issues. I am running Linux Mint 9 on my HP 210 netbook. I am unable to connect to anything using NetworkManager 0.8's automatic configuration. I can't even ping my other computer. Both computers are connected to my cable modem by a switch. The other computer (the one I'm on right now) is running Windows Vista and is working fine.

eth0 is getting an IPv6 address assigned to it, but no IPv4 address. When I do dhclient (I'll include it at the bottom) it says no DHCPOFFERS received and then makes another adapter called eth0:avahi with an IP of 169.254.9.78, which I think I understand from what I read is just a default.

I noticed when I looked at the ipconfig results from my Windows computer that there were a number of things called tunnels on there. My ISP is cox, and I saw some other people with cox had the same setup. One of the tunnels seems to make it so IPv4 and 6 can coexist. Could that be a problem? When I asked Cox why it was set up that way they helpfully referred me to wikipedia.

So, those are my newbish flailings in the dark. Hopefully my little story was somewhat helpful. Thanks in advance for any help you can provide.

Here are my ipconfig (from windows), ifconfig, and dhclient results. Let me know if I can provide any other information.

Windows IP Configuration

Host Name . . . . . . . . . . . . : Cullen-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : sd.cox.net

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : sd.cox.net
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 00-24-8C-64-18-4C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::60ea:25a9:4567:e488%10(Preferred)
IPv4 Address. . . . . . . . . . . : 68.105.122.128(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Friday, July 09, 2010 2:25:26 PM
Lease Expires . . . . . . . . . . : Monday, July 12, 2010 7:59:38 AM
Default Gateway . . . . . . . . . : 68.105.120.1
DHCP Server . . . . . . . . . . . : 172.19.97.43
DHCPv6 IAID . . . . . . . . . . . : 167781516
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-11-4C-7A-FF-00-24-8C-64-18-4C

DNS Servers . . . . . . . . . . . : 68.105.28.11
68.105.29.11
68.105.28.12
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : sd.cox.net
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e74:1c0f:1a7f:bb96:857f(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::1c0f:1a7f:bb96:857f%13(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . : sd.cox.net
Description . . . . . . . . . . . : Microsoft 6to4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2002:4469:7a80::4469:7a80(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : 68.105.28.11
68.105.29.11
68.105.28.12
NetBIOS over Tcpip. . . . . . . . : Disabled

Internet Systems Consortium DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth1/00:26:82:93:eb:25
Sending on LPF/eth1/00:26:82:93:eb:25
Listening on LPF/eth0/c8:0a:a9:c4:d3:45
Sending on LPF/eth0/c8:0a:a9:c4:d3:45
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

cullen@cullen-laptop ~ $ ifconfig -a
eth0 Link encap:Ethernet HWaddr c8:0a:a9:c4:d3:45
inet6 addr: fe80::ca0a:a9ff:fec4:d345/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30551 errors:0 dropped:0 overruns:0 frame:0
TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2035792 (2.0 MB) TX bytes:16245 (16.2 KB)
Interrupt:26

eth1 Link encap:Ethernet HWaddr 00:26:82:93:eb:25
inet6 addr: fe80::226:82ff:fe93:eb25/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:17

eth0:avahi Link encap:Ethernet HWaddr c8:0a:a9:c4:d3:45
inet addr:169.254.9.78 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:26

eth1:avahi Link encap:Ethernet HWaddr 00:26:82:93:eb:25
inet addr:169.254.8.73 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
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:164 errors:0 dropped:0 overruns:0 frame:0
TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11280 (11.2 KB) TX bytes:11280 (11.2 KB)

jschiwal · 07-13-2010, 02:22 AM

"Both computers are connected to my cable modem by a switch."

If you don't use a NAT router, only one computer will be requisitioned for a cable modem. You could have one computer connected to the modem and the second configured for NAT to share the connection. But connecting two devices when the modem only issues one IP address won't work.