On 2011-02-20 13:49, Gerhard Wiesinger wrote: > On Sun, 20 Feb 2011, Jan Kiszka wrote: > >> On 2011-02-19 20:32, Gerhard Wiesinger wrote: >>> Hello, >> http://virt.kernelnewbies.org/MacVTap >> >> ip link add link eth1 name macvtap0 type macvtap mode bridge >> ip link add link eth1 name macvlan0 type macvlan mode bridge >> ifconfig macvlan0 ... > > > Hello Jan, > > iproute2 2.6.37 is needed! > http://devresources.linuxfoundation.org/dev/iproute2/download/iproute2-2.6.37.tar.bz2 > > ================================================================================== > > 1.) Only macvtap interface used > ================================================================================== > > For me it was just unlogically to use a VLAN type interface. Therefore I > tried the following which worked nearly: > /root/download/iproute2/iproute2-2.6.37/ip/ip link add link eth0 name > macvtap0 type macvtap mode bridge > /root/download/iproute2/iproute2-2.6.37/ip/ip link set macvtap0 address > 1a:46:0b:ca:bc:7b up > ip link show macvtap0 > ls -l /dev/tap* > # crw-rw---- 1 root root 249, 8 Feb 20 13:07 /dev/tap8 > qemu-system-x86_64 ... some params ... -net > nic,model=e1000,macaddr=1a:46:0b:ca:bc:7b -net tap,fd=3 3<>/dev/tap8 > > Booting Knoppix 6.2 with ping is ok, MAC address is also correct on > second host. > > Only problem is that from host to guest no networking is possible (only > from guest to other host). > > Any ideas? I guess some forwarding is missing? iptables forward missing?
To my understanding macvlan(+macvtap) devices in bridge mode can only talk to the outer world via the physical device they are attached to or other macvlan nodes attached to that same device. Therefore... > ================================================================================== > > 2.) Only macvtap interface used > ================================================================================== > > /root/download/iproute2/iproute2-2.6.37/ip/ip link add link eth0 name > macvtap0 type macvtap mode bridge > /root/download/iproute2/iproute2-2.6.37/ip/ip link set macvtap0 address > 1a:46:0b:ca:bc:7b up > #/root/download/iproute2/iproute2-2.6.37/ip/ip link add link eth0 name > macvlan0 type macvlan mode bridge > #/root/download/iproute2/iproute2-2.6.37/ip/ip link set macvlan0 address ...the need for this additional macvlan device. You just have to set an IP on macvlan0. Jan > 1a:46:0b:ca:bc:7c up > ip link show macvtap0 > ip link show macvlan0 > ls -l /dev/tap* > # crw-rw---- 1 root root 249, 8 Feb 20 13:07 /dev/tap8 > # No further TAP device created! (Reason why it doesn't work?) > # 7c MAC is used!? > qemu-system-x86_64 ... some params ... -net > nic,model=e1000,macaddr=1a:46:0b:ca:bc:7c -net tap,fd=3 3<>/dev/tap8 > > Booting Knoppix 6.2 without any networking, eth0 in guest has 7c MAC > address. > > Any ideas? > ================================================================================== > > > Thnx. > > Ciao, > Gerhard > > -- > http://www.wiesinger.com/ >
signature.asc
Description: OpenPGP digital signature
