Fedora14.Impossible Internet.More and More data.

Rick Sewill rsewill at gmail.com
Mon Nov 15 06:18:16 UTC 2010


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On 11/14/2010 10:23 PM, Luis Suzuki wrote:
> All below was taken when Gnome NetworkManager was saying that Auto eth0
> was active and OK.
> 
> Below some more data:# ping 192.168.1.254
> PING 192.168.1.254 (192.168.1.254) 56(84) bytes of data.
> 64 bytes from 192.168.1.254: icmp_req=1 ttl=64 time=1.15 ms
> 64 bytes from 192.168.1.254: icmp_req=2 ttl=64 time=0.700 ms
> 64 bytes from 192.168.1.254: icmp_req=3 ttl=64 time=0.733 ms
> 64 bytes from 192.168.1.254: icmp_req=4 ttl=64 time=0.715 ms
> 64 bytes from 192.168.1.254: icmp_req=5 ttl=64 time=0.706 ms
> 64 bytes from 192.168.1.254: icmp_req=6 ttl=64 time=0.775 ms
> 64 bytes from 192.168.1.254: icmp_req=7 ttl=64 time=0.801 ms
> 64 bytes from 192.168.1.254: icmp_req=8 ttl=64 time=0.716 ms
> 64 bytes from 192.168.1.254: icmp_req=9 ttl=64 time=0.726 ms
> 64 bytes from 192.168.1.254: icmp_req=10 ttl=64 time=0.708 ms
> 64 bytes from 192.168.1.254: icmp_req=11 ttl=64 time=0.709 ms
> 

This means the ethernet hardware is working.  You can ping the router.

> #less /etc/resolv.conf
> # Generated by NetworkManager
> domain lan
> search lan
> nameserver 192.168.1.254
> /etc/resolv.conf (END) 
> 

This is good as long as the router will do DNS for you.

> #ifconfig -a
> 
> eth0      Link encap:Ethernet  HWaddr 00:21:70:BC:71:84  
>           inet addr:192.168.1.64  Bcast:192.168.1.255  Mask:255.255.255.0
>           inet6 addr: fe80::221:70ff:febc:7184/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:120 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:153 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:11211 (10.9 KiB)  TX bytes:19119 (18.6 KiB)
>           Interrupt:43 Base address:0x8000 

The interface IP address is 192.168.1.64...okay.

> # ip route
> 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.64
>  metric 1 
> 
> # netstat -rn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt
> Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0
> eth0
> 

You have no default route...this is part of the problem.
When doing ip route, you should have something like
default via 192.168.1.254 dev eth0
When doing netstat -rn, you should have something like
0.0.0.0         192.168.1.254    0.0.0.0         UG        0 0
0 eth0

> # cat /etc/sysconfig/network-scripts/ifcfg-eth0
> cat: /etc/sysconfig/network-scripts/ifcfg-eth0: No such file or directory
> 

Argh.  I don't use NetworkManager...if there is no ifcfg-eth0 file,
what does NetworkManager do?  People?

What you need to do is add a default route to 192.168.1.254 for eth0

I have no plans to use NetworkManager any time soon so I can only give
you general hints...I wish someone who does use NetworkManager would
take over this discussion.

Needless to say...I will try.

When you start the Network Manager client to examine/modify
configurations, you should find the configuration for eth0.

I'm only guessing, but is it something like Network connections?
Can you select the ethernet network connection and push the edit button?

When you do that, does a pop-up appear?
Does it have a IPv4 Settings tab?

Can you select the IPv4 Settings tab.

What is the Method: "Automatic (DHCP)"
                 or "Automatic (DHCP) addresses only"
                 or "Manual"
                 or what?

I'm guessing the Method is Manual...but please tell me.

The following advice is based on the belief the Method is Manual.

Is there a Routes button?  Please press it.

Does another pop-up appear, something like "Editing IPv4 routes for ....
Can you add a route,
Address    Netmask   Gateway         Metric
0.0.0.0    0.0.0.0   192.168.1.254   1

Can someone who does use NetworkManager correct the above please?
I'm sure I have things wrong since I don't use NetworkManager.
Hopefully, people can get the idea what I want tried.

Please let me know how far off I am regarding the NetworkManager GUI.

When you are done, please do either
ip route or netstat -rn
I wish to see if the default route has been added.
If you have a default route...try to ping something on the Internet.

I manage my interfaces myself...I do networking things for a living.
NetworkManager was not my friend, in the past, when it interfered with
what I needed to do...so I turned it off, and never turned it back on.
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