* KVM Bridged Networking Issue in Ubuntu Lucid
@ 2010-08-24 14:08 Rus Hughes
2010-08-24 17:03 ` Brian Jackson
2010-08-25 2:08 ` haishan
0 siblings, 2 replies; 4+ messages in thread
From: Rus Hughes @ 2010-08-24 14:08 UTC (permalink / raw)
To: kvm
Hi guys,
I'm trying to sort out networking for a VM I've created on my Ubuntu
Lucid box but the VM cannot access the Internet.
I can connect to the VM (crisps) from the host (holly) and to the host
from the VM.
But the VM cannot connect to the Internet and the Internet cannot
connect to the VM.
I followed the guide here: https://help.ubuntu.com/community/KVM
I created it using ubuntu-vm-builder using :
ubuntu-vm-builder kvm lucid \
--domain crisps \
--dest crisps \
--arch amd64 \
--hostname crisps \
--mem 2048 \
--rootsize 4096 \
--swapsize 1024 \
--user magicalusernameofdoom \
--pass somesecretawesomepassword \
--ip 178.63.60.159 \
--mask 255.255.255.192 \
--bcast 178.63.60.191 \
--gw 178.63.60.129 \
--dns 213.133.99.99 \
--mirror http://de.archive.ubuntu.com/ubuntu \
--components main,universe,restricted,multiverse \
--addpkg openssh-server \
--libvirt qemu:///system \
--bridge br0;
"virsh start crisps" starts the vm up :
root 29297 0.5 3.3 2280396 271220 ? Sl 14:12 0:13
/usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 2048 -smp 1 -name crisps
-uuid e2cda480-29e7-3740-d6c6-816e2f78223e -chardev
socket,id=monitor,path=/var/lib/libvirt/qemu/crisps.monitor,server,nowait
-monitor chardev:monitor -boot c -drive
file=/home/idimmu/vms/crisps/tmplXQBtt.qcow2,if=ide,index=0,boot=on
-net nic,macaddr=52:54:00:a6:28:b9,vlan=0,model=virtio,name=virtio.0
-net tap,fd=41,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc
127.0.0.1:0 -vga cirrus
Networking on the host is like so:
br0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
inet addr:178.63.60.138 Bcast:178.63.60.191 Mask:255.255.255.192
inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:49080900 errors:0 dropped:0 overruns:0 frame:0
TX packets:54086580 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:35266886777 (35.2 GB) TX bytes:60292047383 (60.2 GB)
eth0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:49418744 errors:0 dropped:0 overruns:0 frame:0
TX packets:54348661 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36337218359 (36.3 GB) TX bytes:60378047518 (60.3 GB)
Interrupt:29 Base address:0x4000
eth0:0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
inet addr:178.63.60.178 Bcast:178.63.60.191 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:29 Base address:0x4000
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:1063249 errors:0 dropped:0 overruns:0 frame:0
TX packets:1063249 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:325111540 (325.1 MB) TX bytes:325111540 (325.1 MB)
vnet0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
inet6 addr: fe80::245d:c9ff:fed2:752e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:72 errors:0 dropped:0 overruns:0 frame:0
TX packets:33 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:3412 (3.4 KB) TX bytes:2698 (2.6 KB)
the hosts /etc/network/interfaces is like so :
auto lo
iface lo inet loopback
# device: eth0
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 178.63.60.138
broadcast 178.63.60.191
netmask 255.255.255.192
gateway 178.63.60.129
network 178.63.60.128
bridge_ports eth0
bridge_stp off
bridge_fd 0
bridge_maxwait 0
# subli.me.uk
auto eth0:0
iface eth0:0 inet static
address 178.63.60.178
netmask 255.255.255.192
If I ping the VM I see the packets on the host br0 but not vnet0, this
is the output of brctl show on the host :
bridge name bridge id STP enabled interfaces
br0 8000.265dc9d2752e no eth0
vnet0
this is the routing table on the host
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0 br0
0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0 br0
this is the routing table on the VM
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0 eth0
0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0 eth0
and the VM's network configuration
eth0 Link encap:Ethernet HWaddr 52:54:00:a6:28:b9
inet addr:178.63.60.159 Bcast:178.63.60.191 Mask:255.255.255.192
inet6 addr: fe80::5054:ff:fea6:28b9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:777 errors:0 dropped:0 overruns:0 frame:0
TX packets:319 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:968410 (968.4 KB) TX bytes:29662 (29.6 KB)
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:37 errors:0 dropped:0 overruns:0 frame:0
TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3412 (3.4 KB) TX bytes:3412 (3.4 KB)
and this is crisps.xml
<domain type='kvm'>
<name>crisps</name>
<uuid>e2cda480-29e7-3740-d6c6-816e2f78223e</uuid>
<memory>2097152</memory>
<currentMemory>2097152</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='x86_64' machine='pc-0.12'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='file' device='disk'>
<source file='/home/idimmu/vms/crisps/tmplXQBtt.qcow2'/>
<target dev='hda' bus='ide'/>
</disk>
<interface type='bridge'>
<mac address='52:54:00:a6:28:b9'/>
<source bridge='br0'/>
<model type='virtio'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'/>
<video>
<model type='cirrus' vram='9216' heads='1'/>
</video>
</devices>
</domain>
im completely out of ideas and any help would be appreciated!
Cheers,
Rus
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KVM Bridged Networking Issue in Ubuntu Lucid
2010-08-24 14:08 KVM Bridged Networking Issue in Ubuntu Lucid Rus Hughes
@ 2010-08-24 17:03 ` Brian Jackson
2010-08-25 2:08 ` haishan
1 sibling, 0 replies; 4+ messages in thread
From: Brian Jackson @ 2010-08-24 17:03 UTC (permalink / raw)
To: Rus Hughes; +Cc: kvm
On Tuesday, August 24, 2010 09:08:30 am Rus Hughes wrote:
> Hi guys,
>
> I'm trying to sort out networking for a VM I've created on my Ubuntu
> Lucid box but the VM cannot access the Internet.
> I can connect to the VM (crisps) from the host (holly) and to the host
> from the VM.
> But the VM cannot connect to the Internet and the Internet cannot
> connect to the VM.
>
> I followed the guide here: https://help.ubuntu.com/community/KVM
>
> I created it using ubuntu-vm-builder using :
>
> ubuntu-vm-builder kvm lucid \
> --domain crisps \
> --dest crisps \
> --arch amd64 \
> --hostname crisps \
> --mem 2048 \
> --rootsize 4096 \
> --swapsize 1024 \
> --user magicalusernameofdoom \
> --pass somesecretawesomepassword \
> --ip 178.63.60.159 \
> --mask 255.255.255.192 \
> --bcast 178.63.60.191 \
> --gw 178.63.60.129 \
> --dns 213.133.99.99 \
> --mirror http://de.archive.ubuntu.com/ubuntu \
> --components main,universe,restricted,multiverse \
> --addpkg openssh-server \
> --libvirt qemu:///system \
> --bridge br0;
>
> "virsh start crisps" starts the vm up :
>
> root 29297 0.5 3.3 2280396 271220 ? Sl 14:12 0:13
> /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 2048 -smp 1 -name crisps
> -uuid e2cda480-29e7-3740-d6c6-816e2f78223e -chardev
> socket,id=monitor,path=/var/lib/libvirt/qemu/crisps.monitor,server,nowait
> -monitor chardev:monitor -boot c -drive
> file=/home/idimmu/vms/crisps/tmplXQBtt.qcow2,if=ide,index=0,boot=on
> -net nic,macaddr=52:54:00:a6:28:b9,vlan=0,model=virtio,name=virtio.0
> -net tap,fd=41,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc
> 127.0.0.1:0 -vga cirrus
>
> Networking on the host is like so:
>
> br0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
> inet addr:178.63.60.138 Bcast:178.63.60.191
> Mask:255.255.255.192 inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:49080900 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54086580 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:35266886777 (35.2 GB) TX bytes:60292047383 (60.2 GB)
>
> eth0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
> inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:49418744 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54348661 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:36337218359 (36.3 GB) TX bytes:60378047518 (60.3 GB)
> Interrupt:29 Base address:0x4000
>
> eth0:0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
> inet addr:178.63.60.178 Bcast:178.63.60.191
> Mask:255.255.255.192 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> Interrupt:29 Base address:0x4000
>
Maybe look here. Should this maybe be br0:0 (or better yet, just use ip addr
add to add the second address to the bridge instead of having aliases).
> 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:1063249 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1063249 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:325111540 (325.1 MB) TX bytes:325111540 (325.1 MB)
>
> vnet0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
> inet6 addr: fe80::245d:c9ff:fed2:752e/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:72 errors:0 dropped:0 overruns:0 frame:0
> TX packets:33 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:500
> RX bytes:3412 (3.4 KB) TX bytes:2698 (2.6 KB)
>
> the hosts /etc/network/interfaces is like so :
>
> auto lo
> iface lo inet loopback
>
> # device: eth0
> auto eth0
> iface eth0 inet manual
>
> auto br0
> iface br0 inet static
> address 178.63.60.138
> broadcast 178.63.60.191
> netmask 255.255.255.192
> gateway 178.63.60.129
> network 178.63.60.128
> bridge_ports eth0
> bridge_stp off
> bridge_fd 0
> bridge_maxwait 0
>
> # subli.me.uk
> auto eth0:0
> iface eth0:0 inet static
> address 178.63.60.178
> netmask 255.255.255.192
>
>
> If I ping the VM I see the packets on the host br0 but not vnet0, this
> is the output of brctl show on the host :
>
> bridge name bridge id STP enabled interfaces
> br0 8000.265dc9d2752e no eth0
>
> vnet0
> this is the routing table on the host
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0
> 0 br0 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0
> 0 br0
>
> this is the routing table on the VM
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0
> 0 eth0 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0
> 0 eth0
>
> and the VM's network configuration
>
> eth0 Link encap:Ethernet HWaddr 52:54:00:a6:28:b9
> inet addr:178.63.60.159 Bcast:178.63.60.191
> Mask:255.255.255.192 inet6 addr: fe80::5054:ff:fea6:28b9/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:777 errors:0 dropped:0 overruns:0 frame:0
> TX packets:319 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:968410 (968.4 KB) TX bytes:29662 (29.6 KB)
>
> 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:37 errors:0 dropped:0 overruns:0 frame:0
> TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:3412 (3.4 KB) TX bytes:3412 (3.4 KB)
>
> and this is crisps.xml
>
> <domain type='kvm'>
> <name>crisps</name>
> <uuid>e2cda480-29e7-3740-d6c6-816e2f78223e</uuid>
> <memory>2097152</memory>
> <currentMemory>2097152</currentMemory>
> <vcpu>1</vcpu>
> <os>
> <type arch='x86_64' machine='pc-0.12'>hvm</type>
> <boot dev='hd'/>
> </os>
> <features>
> <acpi/>
> </features>
> <clock offset='utc'/>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>destroy</on_crash>
> <devices>
> <emulator>/usr/bin/kvm</emulator>
> <disk type='file' device='disk'>
> <source file='/home/idimmu/vms/crisps/tmplXQBtt.qcow2'/>
> <target dev='hda' bus='ide'/>
> </disk>
> <interface type='bridge'>
> <mac address='52:54:00:a6:28:b9'/>
> <source bridge='br0'/>
> <model type='virtio'/>
> </interface>
> <input type='mouse' bus='ps2'/>
> <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'/>
> <video>
> <model type='cirrus' vram='9216' heads='1'/>
> </video>
> </devices>
> </domain>
>
> im completely out of ideas and any help would be appreciated!
>
> Cheers,
>
> Rus
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KVM Bridged Networking Issue in Ubuntu Lucid
2010-08-24 14:08 KVM Bridged Networking Issue in Ubuntu Lucid Rus Hughes
2010-08-24 17:03 ` Brian Jackson
@ 2010-08-25 2:08 ` haishan
2010-08-25 17:42 ` Rus Hughes
1 sibling, 1 reply; 4+ messages in thread
From: haishan @ 2010-08-25 2:08 UTC (permalink / raw)
To: Rus Hughes; +Cc: kvm
Rus Hughes wrote:
> Hi guys,
>
> I'm trying to sort out networking for a VM I've created on my Ubuntu
> Lucid box but the VM cannot access the Internet.
> I can connect to the VM (crisps) from the host (holly) and to the host
> from the VM.
> But the VM cannot connect to the Internet and the Internet cannot
> connect to the VM.
>
> I followed the guide here: https://help.ubuntu.com/community/KVM
>
> I created it using ubuntu-vm-builder using :
>
> ubuntu-vm-builder kvm lucid \
> --domain crisps \
> --dest crisps \
> --arch amd64 \
> --hostname crisps \
> --mem 2048 \
> --rootsize 4096 \
> --swapsize 1024 \
> --user magicalusernameofdoom \
> --pass somesecretawesomepassword \
> --ip 178.63.60.159 \
> --mask 255.255.255.192 \
> --bcast 178.63.60.191 \
> --gw 178.63.60.129 \
> --dns 213.133.99.99 \
> --mirror http://de.archive.ubuntu.com/ubuntu \
> --components main,universe,restricted,multiverse \
> --addpkg openssh-server \
> --libvirt qemu:///system \
> --bridge br0;
>
> "virsh start crisps" starts the vm up :
>
> root 29297 0.5 3.3 2280396 271220 ? Sl 14:12 0:13
> /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 2048 -smp 1 -name crisps
> -uuid e2cda480-29e7-3740-d6c6-816e2f78223e -chardev
> socket,id=monitor,path=/var/lib/libvirt/qemu/crisps.monitor,server,nowait
> -monitor chardev:monitor -boot c -drive
> file=/home/idimmu/vms/crisps/tmplXQBtt.qcow2,if=ide,index=0,boot=on
> -net nic,macaddr=52:54:00:a6:28:b9,vlan=0,model=virtio,name=virtio.0
> -net tap,fd=41,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc
> 127.0.0.1:0 -vga cirrus
>
> Networking on the host is like so:
>
> br0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
> inet addr:178.63.60.138 Bcast:178.63.60.191 Mask:255.255.255.192
> inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:49080900 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54086580 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:35266886777 (35.2 GB) TX bytes:60292047383 (60.2 GB)
>
> eth0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
> inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:49418744 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54348661 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:36337218359 (36.3 GB) TX bytes:60378047518 (60.3 GB)
> Interrupt:29 Base address:0x4000
>
> eth0:0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
> inet addr:178.63.60.178 Bcast:178.63.60.191 Mask:255.255.255.192
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> Interrupt:29 Base address:0x4000
>
> 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:1063249 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1063249 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:325111540 (325.1 MB) TX bytes:325111540 (325.1 MB)
>
> vnet0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
> inet6 addr: fe80::245d:c9ff:fed2:752e/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:72 errors:0 dropped:0 overruns:0 frame:0
> TX packets:33 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:500
> RX bytes:3412 (3.4 KB) TX bytes:2698 (2.6 KB)
>
> the hosts /etc/network/interfaces is like so :
>
> auto lo
> iface lo inet loopback
>
> # device: eth0
> auto eth0
> iface eth0 inet manual
>
> auto br0
> iface br0 inet static
> address 178.63.60.138
> broadcast 178.63.60.191
> netmask 255.255.255.192
> gateway 178.63.60.129
> network 178.63.60.128
> bridge_ports eth0
> bridge_stp off
> bridge_fd 0
> bridge_maxwait 0
>
> # subli.me.uk
> auto eth0:0
> iface eth0:0 inet static
> address 178.63.60.178
> netmask 255.255.255.192
>
>
> If I ping the VM I see the packets on the host br0 but not vnet0, this
> is the output of brctl show on the host :
>
> bridge name bridge id STP enabled interfaces
> br0 8000.265dc9d2752e no eth0
>
> vnet0
> this is the routing table on the host
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0 br0
> 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0 br0
>
> this is the routing table on the VM
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0 eth0
> 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0 eth0
>
> and the VM's network configuration
>
> eth0 Link encap:Ethernet HWaddr 52:54:00:a6:28:b9
> inet addr:178.63.60.159 Bcast:178.63.60.191 Mask:255.255.255.192
> inet6 addr: fe80::5054:ff:fea6:28b9/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:777 errors:0 dropped:0 overruns:0 frame:0
> TX packets:319 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:968410 (968.4 KB) TX bytes:29662 (29.6 KB)
>
> 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:37 errors:0 dropped:0 overruns:0 frame:0
> TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:3412 (3.4 KB) TX bytes:3412 (3.4 KB)
>
> and this is crisps.xml
>
> <domain type='kvm'>
> <name>crisps</name>
> <uuid>e2cda480-29e7-3740-d6c6-816e2f78223e</uuid>
> <memory>2097152</memory>
> <currentMemory>2097152</currentMemory>
> <vcpu>1</vcpu>
> <os>
> <type arch='x86_64' machine='pc-0.12'>hvm</type>
> <boot dev='hd'/>
> </os>
> <features>
> <acpi/>
> </features>
> <clock offset='utc'/>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>destroy</on_crash>
> <devices>
> <emulator>/usr/bin/kvm</emulator>
> <disk type='file' device='disk'>
> <source file='/home/idimmu/vms/crisps/tmplXQBtt.qcow2'/>
> <target dev='hda' bus='ide'/>
> </disk>
> <interface type='bridge'>
> <mac address='52:54:00:a6:28:b9'/>
> <source bridge='br0'/>
> <model type='virtio'/>
> </interface>
> <input type='mouse' bus='ps2'/>
> <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'/>
> <video>
> <model type='cirrus' vram='9216' heads='1'/>
> </video>
> </devices>
> </domain>
>
> im completely out of ideas and any help would be appreciated!
>
> Cheers,
>
> Rus
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
1, create a bridge (br0)
2, create a tap (tap0)
3, add eth0 to br0
4, add tap0 to br0
5, ifconfig eth0 0.0.0.0
6, dhclient br0
7, set default gateway to br0
8, qemu-systam-x86_64 .... -net tap,ifname=tap0,script=no
If the auto configuration of network failed to work that was maybe your
DHCP
server's problem, set the network manually.
Regards
Shan Hai
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: KVM Bridged Networking Issue in Ubuntu Lucid
2010-08-25 2:08 ` haishan
@ 2010-08-25 17:42 ` Rus Hughes
0 siblings, 0 replies; 4+ messages in thread
From: Rus Hughes @ 2010-08-25 17:42 UTC (permalink / raw)
To: kvm
Thanks for your help, it seems enabling ip forwarding on the host and
setting a default gateway on the vm pointing to the host fixed it!
On Wed, Aug 25, 2010 at 3:08 AM, haishan <haishan.bai@gmail.com> wrote:
> Rus Hughes wrote:
>>
>> Hi guys,
>>
>> I'm trying to sort out networking for a VM I've created on my Ubuntu
>> Lucid box but the VM cannot access the Internet.
>> I can connect to the VM (crisps) from the host (holly) and to the host
>> from the VM.
>> But the VM cannot connect to the Internet and the Internet cannot
>> connect to the VM.
>>
>> I followed the guide here: https://help.ubuntu.com/community/KVM
>>
>> I created it using ubuntu-vm-builder using :
>>
>> ubuntu-vm-builder kvm lucid \
>> --domain crisps \
>> --dest crisps \
>> --arch amd64 \
>> --hostname crisps \
>> --mem 2048 \
>> --rootsize 4096 \
>> --swapsize 1024 \
>> --user magicalusernameofdoom \
>> --pass somesecretawesomepassword \
>> --ip 178.63.60.159 \
>> --mask 255.255.255.192 \
>> --bcast 178.63.60.191 \
>> --gw 178.63.60.129 \
>> --dns 213.133.99.99 \
>> --mirror http://de.archive.ubuntu.com/ubuntu \
>> --components main,universe,restricted,multiverse \
>> --addpkg openssh-server \
>> --libvirt qemu:///system \
>> --bridge br0;
>>
>> "virsh start crisps" starts the vm up :
>>
>> root 29297 0.5 3.3 2280396 271220 ? Sl 14:12 0:13
>> /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 2048 -smp 1 -name crisps
>> -uuid e2cda480-29e7-3740-d6c6-816e2f78223e -chardev
>> socket,id=monitor,path=/var/lib/libvirt/qemu/crisps.monitor,server,nowait
>> -monitor chardev:monitor -boot c -drive
>> file=/home/idimmu/vms/crisps/tmplXQBtt.qcow2,if=ide,index=0,boot=on
>> -net nic,macaddr=52:54:00:a6:28:b9,vlan=0,model=virtio,name=virtio.0
>> -net tap,fd=41,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc
>> 127.0.0.1:0 -vga cirrus
>>
>> Networking on the host is like so:
>>
>> br0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
>> inet addr:178.63.60.138 Bcast:178.63.60.191
>> Mask:255.255.255.192
>> inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:49080900 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:54086580 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:35266886777 (35.2 GB) TX bytes:60292047383 (60.2 GB)
>>
>> eth0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
>> inet6 addr: fe80::4261:86ff:fee9:d69a/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:49418744 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:54348661 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:36337218359 (36.3 GB) TX bytes:60378047518 (60.3 GB)
>> Interrupt:29 Base address:0x4000
>>
>> eth0:0 Link encap:Ethernet HWaddr 40:61:86:e9:d6:9a
>> inet addr:178.63.60.178 Bcast:178.63.60.191
>> Mask:255.255.255.192
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> Interrupt:29 Base address:0x4000
>>
>> 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:1063249 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:1063249 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:325111540 (325.1 MB) TX bytes:325111540 (325.1 MB)
>>
>> vnet0 Link encap:Ethernet HWaddr 26:5d:c9:d2:75:2e
>> inet6 addr: fe80::245d:c9ff:fed2:752e/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:72 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:33 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:500
>> RX bytes:3412 (3.4 KB) TX bytes:2698 (2.6 KB)
>>
>> the hosts /etc/network/interfaces is like so :
>>
>> auto lo
>> iface lo inet loopback
>>
>> # device: eth0
>> auto eth0
>> iface eth0 inet manual
>>
>> auto br0
>> iface br0 inet static
>> address 178.63.60.138
>> broadcast 178.63.60.191
>> netmask 255.255.255.192
>> gateway 178.63.60.129
>> network 178.63.60.128
>> bridge_ports eth0
>> bridge_stp off
>> bridge_fd 0
>> bridge_maxwait 0
>>
>> # subli.me.uk
>> auto eth0:0
>> iface eth0:0 inet static
>> address 178.63.60.178
>> netmask 255.255.255.192
>>
>>
>> If I ping the VM I see the packets on the host br0 but not vnet0, this
>> is the output of brctl show on the host :
>>
>> bridge name bridge id STP enabled interfaces
>> br0 8000.265dc9d2752e no eth0
>>
>> vnet0
>> this is the routing table on the host
>>
>> Kernel IP routing table
>> Destination Gateway Genmask Flags Metric Ref Use
>> Iface
>> 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0
>> br0
>> 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0
>> br0
>>
>> this is the routing table on the VM
>>
>> Kernel IP routing table
>> Destination Gateway Genmask Flags Metric Ref Use
>> Iface
>> 178.63.60.128 0.0.0.0 255.255.255.192 U 0 0 0
>> eth0
>> 0.0.0.0 178.63.60.129 0.0.0.0 UG 100 0 0
>> eth0
>>
>> and the VM's network configuration
>>
>> eth0 Link encap:Ethernet HWaddr 52:54:00:a6:28:b9
>> inet addr:178.63.60.159 Bcast:178.63.60.191
>> Mask:255.255.255.192
>> inet6 addr: fe80::5054:ff:fea6:28b9/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:777 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:319 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:968410 (968.4 KB) TX bytes:29662 (29.6 KB)
>>
>> 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:37 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:3412 (3.4 KB) TX bytes:3412 (3.4 KB)
>>
>> and this is crisps.xml
>>
>> <domain type='kvm'>
>> <name>crisps</name>
>> <uuid>e2cda480-29e7-3740-d6c6-816e2f78223e</uuid>
>> <memory>2097152</memory>
>> <currentMemory>2097152</currentMemory>
>> <vcpu>1</vcpu>
>> <os>
>> <type arch='x86_64' machine='pc-0.12'>hvm</type>
>> <boot dev='hd'/>
>> </os>
>> <features>
>> <acpi/>
>> </features>
>> <clock offset='utc'/>
>> <on_poweroff>destroy</on_poweroff>
>> <on_reboot>restart</on_reboot>
>> <on_crash>destroy</on_crash>
>> <devices>
>> <emulator>/usr/bin/kvm</emulator>
>> <disk type='file' device='disk'>
>> <source file='/home/idimmu/vms/crisps/tmplXQBtt.qcow2'/>
>> <target dev='hda' bus='ide'/>
>> </disk>
>> <interface type='bridge'>
>> <mac address='52:54:00:a6:28:b9'/>
>> <source bridge='br0'/>
>> <model type='virtio'/>
>> </interface>
>> <input type='mouse' bus='ps2'/>
>> <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'/>
>> <video>
>> <model type='cirrus' vram='9216' heads='1'/>
>> </video>
>> </devices>
>> </domain>
>>
>> im completely out of ideas and any help would be appreciated!
>>
>> Cheers,
>>
>> Rus
>> --
>> To unsubscribe from this list: send the line "unsubscribe kvm" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>
>
> 1, create a bridge (br0)
> 2, create a tap (tap0)
> 3, add eth0 to br0
> 4, add tap0 to br0
> 5, ifconfig eth0 0.0.0.0
> 6, dhclient br0
> 7, set default gateway to br0
> 8, qemu-systam-x86_64 .... -net tap,ifname=tap0,script=no
>
> If the auto configuration of network failed to work that was maybe your DHCP
> server's problem, set the network manually.
>
>
> Regards
> Shan Hai
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-08-25 17:42 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-08-24 14:08 KVM Bridged Networking Issue in Ubuntu Lucid Rus Hughes
2010-08-24 17:03 ` Brian Jackson
2010-08-25 2:08 ` haishan
2010-08-25 17:42 ` Rus Hughes
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