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Help fixing network issue

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Help fixing network issue

Posted: 2. Jun 2010, 18:55
by nasht00
Host system: Windows 7 x64.
Guest: Fedora 11.

My system was working fine.
Yesterday, I updated VirtualBox, ran all the "important" updates from Fedora, and re-installed the latest version of Guest Additions - as prompted.
Today as I started my VM again, I am unable to connect to the Internet.

The resolution of the VM and the "mouse integration" mode works fine so I assume the Guest Additions are working correctly, but not the network.
I tried both "bridged" and "NAT".

I'm not sure how to find the issue.

Code: Select all

[Nathan@localhost ~]$ ifconfig
eth1      Link encap:Ethernet  HWaddr 08:00:27:0A:75:A7  
          inet addr:192.168.1.21  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe0a:75a7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:598 errors:0 dropped:0 overruns:0 frame:0
          TX packets:117 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:48750 (47.6 KiB)  TX bytes:13159 (12.8 KiB)
          Interrupt:19 Base address:0xd020 

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:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1040 (1.0 KiB)  TX bytes:1040 (1.0 KiB)
Any idea?

Thanks

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:01
by Perryg
I see that the interface is eth1. Did you by chance uninstall and then reinstall causing this?
You can try to edit the /etc/udev/rules.d/70-persistent-net.rules or you can delete the rules and Linux will configure it on the next boot
Usually the interface should be eth0. If this does not work then please post the following
From the host command window (prompt) VBoxManage showvminfo <VM Name> --details --machinereadable and post here. Replace <VM Name> with the actual name of the VM. Use "" if the name has a space in it.

Hint: you must be in the directory that has VBoxManage to get this to work.

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:12
by nasht00
I deleted /etc/udev/rules.d/70-persistent-net.rules and rebooted, still offline:

Code: Select all

[Nathan@localhost ~]$ ifconfig
eth0      Link encap:Ethernet  HWaddr 08:00:27:0A:75:A7  
          inet addr:192.168.1.21  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe0a:75a7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:703 errors:0 dropped:0 overruns:0 frame:0
          TX packets:250 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:94643 (92.4 KiB)  TX bytes:27425 (26.7 KiB)
          Interrupt:19 Base address:0xd020 

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:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1040 (1.0 KiB)  TX bytes:1040 (1.0 KiB)
As far as the other command:

Code: Select all

C:\Program Files\Sun\VirtualBox>VBoxManage showvminfo "Fedora 11" --details --ma
chinereadable
Sun VirtualBox Command Line Management Interface Version 3.1.8
(C) 2005-2010 Sun Microsystems, Inc.
All rights reserved.

name="Fedora 11"
ostype="Fedora"
UUID="8e45d92e-157e-43bb-be24-a0df65038ac7"
CfgFile="C:\Users\Nathan\.VirtualBox\Machines\Fedora 11\Fedora 11.xml"
hardwareuuid="8e45d92e-157e-43bb-be24-a0df65038ac7"
memory=4096
vram=12
cpus=2
synthcpu="off"
bootmenu="messageandmenu"
boot1="floppy"
boot2="dvd"
boot3="disk"
boot4="none"
acpi="on"
ioapic="on"
pae="on"
biossystemtimeoffset=0
hwvirtex="on"
hwvirtexexcl="off"
nestedpaging="on"
vtxvpid="on"
VMState="running"
VMStateChangeTime="2010-06-02T16:49:14.059000000"
monitorcount=1
accelerate3d="off"
accelerate2dvideo="off"
teleporterenabled="off"
teleporterport=0
teleporteraddress=""
teleporterpassword=""
storagecontrollername0="IDE Controller"
storagecontrollertype0="PIIX4"
storagecontrollerinstance0="0"
storagecontrollermaxportcount0="2"
storagecontrollerportcount0="2"
storagecontrollername1="Floppy Controller"
storagecontrollertype1="I82078"
storagecontrollerinstance1="0"
storagecontrollermaxportcount1="1"
storagecontrollerportcount1="1"
"IDE Controller-0-0"="C:\Users\Nathan\.VirtualBox\HardDisks\Fedora 11.vdi"
"IDE Controller-ImageUUID-0-0"="fd8a2589-c905-4887-b61e-bbcbf35afe7e"
"IDE Controller-0-1"="none"
"IDE Controller-1-0"="emptydrive"
"IDE Controller-1-1"="none"
"Floppy Controller-0-0"="emptydrive"
"Floppy Controller-0-1"="none"
bridgeadapter1="Realtek PCIe FE Family Controller"
macaddress1="0800270A75A7"
cableconnected1="on"
nic1="bridged"
nic2="none"
nic3="none"
nic4="none"
nic5="none"
nic6="none"
nic7="none"
nic8="none"
uart1="off"
uart2="off"
audio="dsound"
clipboard="bidirectional"
VideoMode="1600,795,32"
vrdp="off"
usb="on"
VRDPActiveConnection="off"
VRDPClients=0
GuestStatisticsUpdateInterval=0
StatGuestSample=0
Thanks

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:15
by nasht00
Oh wait!

Code: Select all

[Nathan@localhost ~]$ ping google.com
PING google.com (74.125.19.104) 56(84) bytes of data.
64 bytes from nuq04s01-in-f104.1e100.net (74.125.19.104): icmp_seq=1 ttl=56 time=21.8 ms
64 bytes from nuq04s01-in-f104.1e100.net (74.125.19.104): icmp_seq=2 ttl=56 time=21.7 ms
^C
--- google.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1924ms
rtt min/avg/max/mdev = 21.723/21.780/21.838/0.158 ms
Doesn't this mean I have network connexion?
Yet Firefox doesn't connect.
It's set to "no proxy".
I'm gonna play around with this a little more, if pings work, there must be an easy way out ...

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:17
by nasht00
More data:

Code: Select all

[Nathan@localhost ~]$ wget google.com
--2010-06-02 10:16:50--  http://google.com/
Resolving google.com... failed: Temporary failure in name resolution.
wget: unable to resolve host address “google.com”

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:18
by Perryg
Can you ping the host and the gateway?
What about yahoo.com
and 209.191.122.70

Post the results (yes/no) to the above questions

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:23
by nasht00
Yes to all:

Code: Select all

[Nathan@localhost ~]$ 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_seq=1 ttl=255 time=0.778 ms
64 bytes from 192.168.1.254: icmp_seq=2 ttl=255 time=0.612 ms
^C
--- 192.168.1.254 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1417ms
rtt min/avg/max/mdev = 0.612/0.695/0.778/0.083 ms
[Nathan@localhost ~]$ ping yahoo.com
PING yahoo.com (72.30.2.43) 56(84) bytes of data.
64 bytes from ir1.fp.vip.sk1.yahoo.com (72.30.2.43): icmp_seq=1 ttl=56 time=19.6 ms
64 bytes from ir1.fp.vip.sk1.yahoo.com (72.30.2.43): icmp_seq=2 ttl=56 time=47.9 ms
^C
--- yahoo.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1659ms
rtt min/avg/max/mdev = 19.677/33.834/47.992/14.158 ms
[Nathan@localhost ~]$ ping 209.191.122.70
PING 209.191.122.70 (209.191.122.70) 56(84) bytes of data.
64 bytes from 209.191.122.70: icmp_seq=1 ttl=55 time=55.3 ms
64 bytes from 209.191.122.70: icmp_seq=2 ttl=55 time=55.3 ms
^C
--- 209.191.122.70 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1497ms
rtt min/avg/max/mdev = 55.318/55.347/55.377/0.237 ms

But I can't wget anything:

Code: Select all

[Nathan@localhost ~]$ wget yahoo.com
--2010-06-02 10:23:01--  http://yahoo.com/
Resolving yahoo.com... failed: Temporary failure in name resolution.
wget: unable to resolve host address “yahoo.com”
Nor connect to my SVN:

Code: Select all

[Nathan@localhost website]$ svn update
svn: Network connection closed unexpectedly

Re: Help fixing network issue

Posted: 2. Jun 2010, 19:57
by Perryg
Can you browse using firefox to places?
The indication is you are having name resolution problems. Still can not be sure though.
If the guest can see and get to anywhere on the Internet then I would discount VBox being your problem though.

Re: Help fixing network issue

Posted: 2. Jun 2010, 22:18
by nasht00
I'm not sure what you mean but let me clarify.

On my host (windows), I can browse the Internet without problems.
On my guest (the fedora virtual machine), I can't do anything useful. Only "ping" works.
Can't use Firefox, can't use wget, can't use SVN ...

Should I take this issue to the Fedora forums?

Re: Help fixing network issue

Posted: 2. Jun 2010, 23:02
by Sasquatch
What does FireFox do when you browse to your router's IP (192.168.1.254)? Do you get it's web interface or not? If you don't, but the Host does, them somehow you have a firewall rule on the Guest that blocks HTTP traffic. Check if you have iptables installed and configured, or a program that can set rules for it.
If you're at a company network, check for proxy settings. Look at the Host for it and if it does in fact use a proxy, that's your problem. A proxy is needed to browse the web, yet ping and name lookups will work without it, as designed.

Re: Help fixing network issue

Posted: 2. Jun 2010, 23:48
by nasht00
Yes I am able to get to my router page without problem.

Now even more weird, I am also able to access the fedora docs (clicking on the bookmakrs bar): http://docs.fedoraproject.org/en-US/Fed ... ase_Notes/
and any webppage on that site.

Yet I still can't go to yahoo, google, virtualbox.org, etc ...

My network doesn't use a proxy of fancy firewall.
Now maybe the latest updates to Fedora installed some kind of firewall when I wasn't looking ...

Re: Help fixing network issue

Posted: 2. Jun 2010, 23:49
by nasht00

Code: Select all

[Nathan@localhost ~]$ wget fedoraproject.org
--2010-06-02 14:48:47--  http://fedoraproject.org/
Resolving fedoraproject.org... 85.236.55.5, 140.211.169.196, 152.46.7.221, ...
Connecting to fedoraproject.org|85.236.55.5|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 6589 (6.4K) [text/html]
Saving to: “index.html”

100%[======================================>] 6,589       36.1K/s   in 0.2s    

2010-06-02 14:48:48 (36.1 KB/s) - “index.html” saved [6589/6589]

[Nathan@localhost ~]$ wget yahoo.com
--2010-06-02 14:48:58--  http://yahoo.com/
Resolving yahoo.com... failed: Temporary failure in name resolution.
wget: unable to resolve host address “yahoo.com”

Re: Help fixing network issue

Posted: 2. Jun 2010, 23:59
by nasht00
Gentlemen and gentlemen,
I solved it.

I manually set the DNS server to google's "public dns" (http://code.google.com/speed/public-dns/). And then it magically worked again.

Now that doesn't really explain much, but it works, so, good enough!

Re: Help fixing network issue

Posted: 3. Jun 2010, 00:15
by Perryg
Really it explains everything. Like I said earlier it appeared that you were having name resolution problems. Could be your providers DNS was corrupt or something like that. Not usual but not uncommon either.
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