CentOS Networking with V Box

Fri Feb 6 13:53:40 MST 2015

Your router probably wasn't giving up the DHCP release to your physical
card's mac address. . .that's happened to me too

On Fri, Feb 6, 2015 at 1:36 PM, Michael Havens <bmike1 at gmail.com> wrote:

> you know.... I got my modem/router and had no problems with it for 6
> years. Twice now, in the same year, it has stopped sending signal to my
> computer requiring me to reboot it. The first time it happened really
> screwed with me as I didn't know how to fix it for a couple of days. I
> guess it is going bad. Just remember this for the next time something like
> this or that happens.
>
> :-)~MIKE~(-:
>
> On Fri, Feb 6, 2015 at 12:26 PM, Michael Torres <matorres124 at gmail.com>
> wrote:
>
>> UPDATE
>>
>> Not really sure what the issue was, but I reset my Router and voila!  it
>> works.
>>
>> Thanks for all the advice.
>>
>> Mike
>>
>> On Wed, Feb 4, 2015 at 10:20 AM, Todd Millecam <tyggna at gmail.com> wrote:
>>
>>> Might be helpful to start from square one.
>>>
>>> First thing you need to determine is if wireshark will work on your
>>> wifi--if it does then continue.  If it doesn't, then it only worked at
>>> starbucks because they have a wonkey setup where they're intentionally
>>> trying to capture all the internet traffic that goes through there.
>>>
>>> Here are the exact commands I use to setup a bridged interface manually
>>> on a systemd system using ip (as opposed to the old ifconfig), just swap
>>> out my ethernet ens32 for your enp0p3
>>>
>>> ]$ ip link add name br0 type bridge
>>> ]$ ip link set dev br0 up
>>> ]$ ip link set dev ens32 promisc on
>>> ]$ ip link set dev ens32 down && ip link set dev ens32 up
>>> ]$ ip link set dev ens32 master br0 #lose connection here
>>> ]$ modprobe tun
>>> ]$ ip tuntap add tap0 mode tap
>>> ]$ brctl addif br0 ens32
>>> ]$ brctl addif br0 tap0
>>> ]$ dhcpcd -k
>>> ]$ dhcpcd br0
>>> ]$ ping google.com
>>>
>>> If ping works, then you're setup and have a tap0 interface ready to go
>>> for your VM.
>>>
>>> On Wed, Feb 4, 2015 at 9:19 AM, sean <sean.a.ritzler at gmail.com> wrote:
>>>
>>>> Are you sure that it was bridged at Starbucks and not nat'd? What's the
>>>> wifi chip? Not all have support for being bridged.
>>>> On Feb 4, 2015 9:09 AM, "Michael Torres" <matorres124 at gmail.com> wrote:
>>>>
>>>>> Yes it has both ...its a laptop.  I hear what your saying but i have a
>>>>> hard time wrapping my head around the fact that my wireless card will
>>>>> communicate with starbucks router..but not mine.   I am going to try and
>>>>> reconfigure. My linksys router.... i have to factory reset it as i forgot
>>>>> the password.
>>>>> On Feb 4, 2015 8:36 AM, "Michael Butash" <michael at butash.net> wrote:
>>>>>
>>>>>> I don't use Cent ever, but if it's anything like Ubuntu, you get
>>>>>> either a) network interfaces file ala sysconfig scripts in rh derivatives
>>>>>> or b) NetworkManager controlling everything, but not both.  If NM is
>>>>>> running your stack, than it's likely ignoring those configurations as it
>>>>>> contains all that in dbus and /etc/NetworkManager or like.
>>>>>>
>>>>>> If that is a wireless nic, I still think the wireless isn't giving
>>>>>> you another address, and likely won't in all cases.  Reason is typically
>>>>>> wireless is meant to have a single client per security association.  This
>>>>>> is usually controllable to some aspect. There's a reason to prevent this -
>>>>>> someone bridging their laptop to strong encrypted wireless, and
>>>>>> representing it via old wep or like I can crack with my phone.  Might work
>>>>>> at home, but don't always expect that to work in more strict environments.
>>>>>>
>>>>>> Does the system have a wired nic on it?  Have you tested with that?
>>>>>>
>>>>>> If you want to see the transaction, "tcpdump -i enp0s3 port 67 or
>>>>>> port 68" that "outside" interface and see if you see the dhcp packet leave
>>>>>> the wireless.  If you get no response, your router/ap doesn't like another
>>>>>> request.  If not leaving that interface, it's a local system issue.
>>>>>>
>>>>>> Packets on the wire trump all, see if there are any.
>>>>>>
>>>>>> -mb
>>>>>>
>>>>>>
>>>>>> On 02/04/2015 01:07 AM, Michael Torres wrote:
>>>>>>
>>>>>>> I didnt think that was the reason. just for the simple fact that  I
>>>>>>> was connected wirelessly at Starbucks......their router assigned me an IP
>>>>>>> address using the enp0s3 file.
>>>>>>>
>>>>>>> anyways,  I removed the device and reinstalled, still the same
>>>>>>> thing.  I still think its a setting in my router or perhaps Windows strikes
>>>>>>> again and there is something in the Network Manager that I dont understand.
>>>>>>>
>>>>>>> How frustrating.....anyways, thanks for the help, if you think of
>>>>>>> anything else, please let me know.
>>>>>>>
>>>>>>> Going to bed now..
>>>>>>>
>>>>>>>
>>>>>> ---------------------------------------------------
>>>>>> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>>>>>> To subscribe, unsubscribe, or to change your mail settings:
>>>>>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>>>>
>>>>>
>>>>> ---------------------------------------------------
>>>>> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>>>>> To subscribe, unsubscribe, or to change your mail settings:
>>>>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>>>
>>>>
>>>> ---------------------------------------------------
>>>> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>>>> To subscribe, unsubscribe, or to change your mail settings:
>>>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>>
>>>
>>>
>>>
>>> --
>>> Todd Millecam
>>>
>>> ---------------------------------------------------
>>> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>>> To subscribe, unsubscribe, or to change your mail settings:
>>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>
>>
>>
>> ---------------------------------------------------
>> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
>> To subscribe, unsubscribe, or to change your mail settings:
>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>
>
>
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
> To subscribe, unsubscribe, or to change your mail settings:
> http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>

-- 
Todd Millecam
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.phxlinux.org/pipermail/plug-discuss/attachments/20150206/e75cbe31/attachment.html>