Peter Nguyen <petern@...34...> hat am 3. Juni 2010 um 07:28 geschrieben:

> Hi all,
>
> I think i might have figured out my issue. The IP address of 10.0.0.1
> corresponds to the TAP device, which suggests that the requests are
> coming from the TAP device (which it should be i think, unless someone
> can correct me). So i guess it might not actually be possible to get the
> starting IP address ie. the IP address of the XP VM (which is obviously
> not 10.0.0.1).
>
> Peter
>
> Peter Nguyen wrote:
> > Sven,
> >
> > OK, so now i've got 2 different mac addresses for each of the instances.
> > However, it seems to me that the remote ip addresses obtained by the web server
> > are the same, regardless of the machine making the request (ie. either the XP vm
> > or the host browser). Any idea as to why this is happening? I mean, the IP
> > address that XP obtains is not 10.0.0.1, yet when the web server receives a HTTP
> > request, the IP address is always 10.0.0.1.
> >
> > BTW, i used this command to run my XP instance:
> >
> > kvm -localtime -cdrom Microsoft\ Windows\ XP\ Professional\ \(SP2\).iso -m 384
> > -boot d windows.img
> >
> > In this case, I figured that I don't need to supply a mac address for the XP vm
> > given the web server already has a unique mac address. Furthermore, I've had
> > difficulties in assigning a mac address to the xp vm as i keep getting the
> > following message:
> >
> > Warning: vlan 0 is not connected to host network
> >
> > Thanks
> > Peter
> >
> > Quoting "mx@...19..." <mx@...19...>:
> >
> >   
> >> Â
> >> Hi Peter,
> >> Â
> >> forget what I've said about qemu :)
> >> Â
> >> I invoke qemu this way:
> >> Â
> >> qemu/i386-softmmu/qemu -kernel $1 -serial stdio -m 1024 -usbdevice mouse
> >> -usbdevice keyboard -net nic,model=pcnet,macaddr=00:81:71:61:51:41 -net
> >> tap,ifname=tap0,script=no,downscript=no
> >> Â
> >> Note that in my commandline the macaddr param sticks to the -net nic param
> >> while
> >> in yours it sticks to the -net tap param.
> >> Â
> >> Isn't this a nice candidate?
> >> Â
> >> Cheers
> >> Â
> >> Sven
> >> Â
> >>
> >> Peter Nguyen <peter.nguyen@...35...> hat am 2. Juni 2010 um
> >> 14:18
> >> geschrieben:
> >>
> >>     
> >>> BTW, this is the output from dhcpd3.
> >>>
> >>> Wrote 2 leases to leases file.
> >>> Listening on LPF/tap0/de:64:1c:dc:00:f4/10.0.0/24
> >>> Sending on   LPF/tap0/de:64:1c:dc:00:f4/10.0.0/24
> >>> Sending on   Socket/fallback/fallback-net
> >>> DHCPDISCOVER from 52:54:00:12:34:56 via tap0
> >>> DHCPOFFER on 10.0.0.17 to 52:54:00:12:34:56 via tap0
> >>> DHCPREQUEST for 10.0.0.17 (10.0.0.1) from 52:54:00:12:34:56 via tap0
> >>> DHCPACK on 10.0.0.17 to 52:54:00:12:34:56 via tap0
> >>>
> >>> Also, this is the command i used to execute the web server via qemu:
> >>>
> >>> sudo qemu -m 128 -serial stdio -no-kqemu -hda c.img -net nic,model=pcnet
> >>>       
> >> -net
> >>     
> >>> tap,ifname=tap0,macaddr=00:81:71:61:51:41,script=no,downscript=no
> >>>
> >>> It seems to me that the dhcp output is always the same, even if i use the
> >>> "02-00-00-00-00-01" mac address.
> >>>
> >>> Peter
> >>>
> >>>
> >>> Quoting "mx@...19..." <mx@...19...>:
> >>>
> >>>       
> >>>> Hi Peter,
> >>>> ÂÂ
> >>>> I'm not sure if I've got your setup right or not.
> >>>> ÂÂ
> >>>> You have a host operating system (guess linux) with two qemu instances,
> >>>>         
> >> one
> >>     
> >>>> running Windows XP and the other running genode with the webserver.
> >>>> ÂÂ
> >>>> Your host system also runs a dhcp server which assigns the same ip
> >>>>         
> >> address
> >>     
> >>>> to
> >>>> both qemu instances.
> >>>> ÂÂ
> >>>> This assignment could be caused by the fact that both qemu instances have
> >>>> the
> >>>> same mac address.
> >>>> ÂÂ
> >>>> The 10.02 release notes state that the nic driver "fakes an ethernet NIC
> >>>> with
> >>>> the MAC address 02-00-00-00-00-01". Where could that MAC address come
> >>>>         
> >> from?
> >>     
> >>>> The
> >>>> driver obtains it from qemu in dde_tx_handler:
> >>>> ÂÂ
> >>>> dde_linux26_net_get_mac_addr(1, (unsigned char*)_mac_addr.addr);
> >>>> ÂÂ
> >>>> ÂÂ
> >>>> This schould be exactly that MAC address you shoud have configured when
> >>>> starting
> >>>> up qemu (did you?):
> >>>> ÂÂ
> >>>> This could look like "-net nic,model=pcnet,macaddr=00:81:71:61:51:41"
> >>>> ÂÂ
> >>>> Perhaps you forgot this step?
> >>>> ÂÂ
> >>>> If you haven't, it would be helpful if you provided a Wireshark trace
> >>>>         
> >> taken
> >>     
> >>>> from
> >>>> your tap interface.
> >>>> ÂÂ
> >>>> Cheers
> >>>> ÂÂ
> >>>> Sven
> >>>> ÂÂ
> >>>>
> >>>> Peter Nguyen <petern@...34...> hat am 2. Juni 2010 um 05:04
> >>>> geschrieben:
> >>>>
> >>>>         
> >>>>> Hi,
> >>>>>
> >>>>> I was just wondering in using TAP with the HTTP server (and following
> >>>>> the instructions in the genode 10.02 documentation), i've noticed that
> >>>>> when i have multiple connections to the server, whereby i have a
> >>>>>           
> >> windows
> >>     
> >>>>> xp virtual machine making requests to the server in addition to the
> >>>>>           
> >> host
> >>     
> >>>>> operating system (the XP vm is running in qemu as well as the web
> >>>>> server), the IP addresses that the web server obtains are always the
> >>>>> same regardless of the machine making the requests. Does anyone know
> >>>>>           
> >> how
> >>     
> >>>>> to provide unique IP addresses for each VM ie. is there an option i
> >>>>> can/need to specify when i run qemu? or is there something i have to do
> >>>>> with dhcpd3 or the conf,pid or lease files to ensure this
> >>>>>           
> >> functionality.
> >>     
> >>>>> Thanks
> >>>>> Peter
> >>>>>
> >>>>>
> >>>>>           
> >> ----------------------------------------------------------------------------
> >>     
> >>>> --
> >>>>         
> >>>>> _______________________________________________
> >>>>> Genode-main mailing list
> >>>>> Genode-main@lists.sourceforge.net
> >>>>> https://lists.sourceforge.net/lists/listinfo/genode-main
> >>>>>           
> >>>> ÂÂ
> >>>> --
> >>>> Sven Fülster
> >>>>         
> >>>
> >>>
> >>>       
> >> ------------------------------------------------------------------------------
> >>     
> >>> _______________________________________________
> >>> Genode-main mailing list
> >>> Genode-main@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/genode-main
> >>>       
> >> Â
> >> Â
> >> --
> >> Sven Fülster
> >>
> >>
> >> Â
> >> Â
> >>
> >> Peter Nguyen <peter.nguyen@...35...> hat am 2. Juni 2010 um
> >> 14:18
> >> geschrieben:
> >>
> >>     
> >>> BTW, this is the output from dhcpd3.
> >>>
> >>> Wrote 2 leases to leases file.
> >>> Listening on LPF/tap0/de:64:1c:dc:00:f4/10.0.0/24
> >>> Sending on   LPF/tap0/de:64:1c:dc:00:f4/10.0.0/24
> >>> Sending on   Socket/fallback/fallback-net
> >>> DHCPDISCOVER from 52:54:00:12:34:56 via tap0
> >>> DHCPOFFER on 10.0.0.17 to 52:54:00:12:34:56 via tap0
> >>> DHCPREQUEST for 10.0.0.17 (10.0.0.1) from 52:54:00:12:34:56 via tap0
> >>> DHCPACK on 10.0.0.17 to 52:54:00:12:34:56 via tap0
> >>>
> >>> Also, this is the command i used to execute the web server via qemu:
> >>>
> >>> sudo qemu -m 128 -serial stdio -no-kqemu -hda c.img -net nic,model=pcnet
> >>>       
> >> -net
> >>     
> >>> tap,ifname=tap0,macaddr=00:81:71:61:51:41,script=no,downscript=no
> >>>
> >>> It seems to me that the dhcp output is always the same, even if i use the
> >>> "02-00-00-00-00-01" mac address.
> >>>
> >>> Peter
> >>>
> >>>
> >>> Quoting "mx@...19..." <mx@...19...>:
> >>>
> >>>       
> >>>> Hi Peter,
> >>>> ÂÂ
> >>>> I'm not sure if I've got your setup right or not.
> >>>> ÂÂ
> >>>> You have a host operating system (guess linux) with two qemu instances,
> >>>>         
> >> one
> >>     
> >>>> running Windows XP and the other running genode with the webserver.
> >>>> ÂÂ
> >>>> Your host system also runs a dhcp server which assigns the same ip
> >>>>         
> >> address
> >>     
> >>>> to
> >>>> both qemu instances.
> >>>> ÂÂ
> >>>> This assignment could be caused by the fact that both qemu instances have
> >>>> the
> >>>> same mac address.
> >>>> ÂÂ
> >>>> The 10.02 release notes state that the nic driver "fakes an ethernet NIC
> >>>> with
> >>>> the MAC address 02-00-00-00-00-01". Where could that MAC address come
> >>>>         
> >> from?
> >>     
> >>>> The
> >>>> driver obtains it from qemu in dde_tx_handler:
> >>>> ÂÂ
> >>>> dde_linux26_net_get_mac_addr(1, (unsigned char*)_mac_addr.addr);
> >>>> ÂÂ
> >>>> ÂÂ
> >>>> This schould be exactly that MAC address you shoud have configured when
> >>>> starting
> >>>> up qemu (did you?):
> >>>> ÂÂ
> >>>> This could look like "-net nic,model=pcnet,macaddr=00:81:71:61:51:41"
> >>>> ÂÂ
> >>>> Perhaps you forgot this step?
> >>>> ÂÂ
> >>>> If you haven't, it would be helpful if you provided a Wireshark trace
> >>>>         
> >> taken
> >>     
> >>>> from
> >>>> your tap interface.
> >>>> ÂÂ
> >>>> Cheers
> >>>> ÂÂ
> >>>> Sven
> >>>> ÂÂ
> >>>>
> >>>> Peter Nguyen <petern@...34...> hat am 2. Juni 2010 um 05:04
> >>>> geschrieben:
> >>>>
> >>>>         
> >>>>> Hi,
> >>>>>
> >>>>> I was just wondering in using TAP with the HTTP server (and following
> >>>>> the instructions in the genode 10.02 documentation), i've noticed that
> >>>>> when i have multiple connections to the server, whereby i have a
> >>>>>           
> >> windows
> >>     
> >>>>> xp virtual machine making requests to the server in addition to the
> >>>>>           
> >> host
> >>     
> >>>>> operating system (the XP vm is running in qemu as well as the web
> >>>>> server), the IP addresses that the web server obtains are always the
> >>>>> same regardless of the machine making the requests. Does anyone know
> >>>>>           
> >> how
> >>     
> >>>>> to provide unique IP addresses for each VM ie. is there an option i
> >>>>> can/need to specify when i run qemu? or is there something i have to do
> >>>>> with dhcpd3 or the conf,pid or lease files to ensure this
> >>>>>           
> >> functionality.
> >>     
> >>>>> Thanks
> >>>>> Peter
> >>>>>
> >>>>>
> >>>>>           
> >> ----------------------------------------------------------------------------
> >>     
> >>>> --
> >>>>         
> >>>>> _______________________________________________
> >>>>> Genode-main mailing list
> >>>>> Genode-main@lists.sourceforge.net
> >>>>> https://lists.sourceforge.net/lists/listinfo/genode-main
> >>>>>           
> >>>> ÂÂ
> >>>> --
> >>>> Sven Fülster
> >>>>         
> >>>
> >>>
> >>>       
> >> ------------------------------------------------------------------------------
> >>     
> >>> _______________________________________________
> >>> Genode-main mailing list
> >>> Genode-main@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/genode-main
> >>>       
> >> Â
> >> Â
> >> --
> >> Sven Fülster
> >> xms@...38...
> >>     
> >
> >
> >
> > ------------------------------------------------------------------------------
> >
> > _______________________________________________
> > Genode-main mailing list
> > Genode-main@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/genode-main
> >   
>
>
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