Have been an Astaro fan with a home license for many years. Have virtualized my Astaro with the outdated vmware server. Now I am investing how to upgrade to UTM 9 using KVM. UTM has support for KVM since v8.203 using virtio-drivers. I am a KVM-newbee and have two major questions about KVM and UTM9. My KVM-host has three phsyical NICS: Internal Wireless External Internal network Network: 192.168.1.0/24 GW: 192.168.1.1 UTM9 is both DHCP-server and gateway for the Internal Network. The KVM-host has a static IP-address on this network, 192.168.1.250 Wireless network Network: 192.168.4.0/24 GW: 192.168.4.1 UTM9 is both DHCP-server and gateway for the Wireless Network. The KVM-host shall not have IP-connectivity on this network. External network Network 147.13.10.0/25 GW: 147.13.10.1 UTM9 has three static IP-adresses on External, 147.13.10.2 is the main IP-address, 147.13.10.2 and 147.13.10.3 is two additional IP-addresses. The KVM-host shall not have IP-connectivity on this network. My two questions are: [LIST=1] How shall I setup bridged networking on the KVM-host? (/etc/networking/interfaces). Can anyone give me a working example? Must I do anything on the UTM instance besides configuring UTM9 via the Web interface? Like bridged networking or something else? [/LIST] I have attached a sample of the KVM-hosts /etc/networking/interfaces which is probably wrong auto lo iface lo inet loopback #Internal network #The KVM-host shall have the static IP-address 192.168.1.250 #The UTM is DHCP-server and gateway for hosts attached to internal auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address 192.168.1.250 netmask 255.255.255.0 network 192.168.1.0 gateway 192.168.1.1 broadcast 192.168.1.255 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_stp off #Wireless #The KVM-host not have IP-connecty on Wireless #The UTM is DHCP-server and gateway for hosts attached to wireless auto eth1 iface eth1 inet manual auto br1 iface br1 inet static bridge_ports eth1 bridge_fd 9 bridge_hello 2 bridge_stp off #External #The physical host shall not have IP-connecty on External #The UTM shall have three static IP-addresses: 147.13.10.2, 147.13.10.3 and 147.13.10.4 #netmask 255.255.255.128 auto eth2 iface eth2 inet manual auto br2 iface br2 inet static bridge_ports eth2 bridge_fd 9 bridge_hello 2 bridge_stp off

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KVM and UTM v9?

Have been an Astaro fan with a home license for many years. Have virtualized my Astaro with the outdated vmware server. Now I am investing how to upgrade to UTM 9 using KVM. UTM has support for KVM since v8.203 using virtio-drivers.

I am a KVM-newbee and have two major questions about KVM and UTM9.

My KVM-host has three phsyical NICS:

Internal
Wireless
External

Internal network
Network: 192.168.1.0/24
GW: 192.168.1.1

UTM9 is both DHCP-server and gateway for the Internal Network.
The KVM-host has a static IP-address on this network, 192.168.1.250

Wireless network
Network: 192.168.4.0/24
GW: 192.168.4.1

UTM9 is both DHCP-server and gateway for the Wireless Network.
The KVM-host shall not have IP-connectivity on this network.

External network
Network 147.13.10.0/25
GW: 147.13.10.1

UTM9 has three static IP-adresses on External, 147.13.10.2 is the main IP-address, 147.13.10.2 and 147.13.10.3 is two additional IP-addresses.
The KVM-host shall not have IP-connectivity on this network.

My two questions are:

[LIST=1]

How shall I setup bridged networking on the KVM-host? (/etc/networking/interfaces). Can anyone give me a working example?
Must I do anything on the UTM instance besides configuring UTM9 via the Web interface? Like bridged networking or something else?

[/LIST]
I have attached a sample of the KVM-hosts /etc/networking/interfaces which is probably wrong

auto lo
iface lo inet loopback

#Internal network
#The KVM-host shall have the static IP-address 192.168.1.250
#The UTM is DHCP-server and gateway for hosts attached to internal

auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
       address 192.168.1.250
       netmask 255.255.255.0
       network 192.168.1.0
       gateway 192.168.1.1
       broadcast 192.168.1.255
       bridge_ports eth0
       bridge_fd 9
       bridge_hello 2
       bridge_stp off

#Wireless
#The KVM-host not have IP-connecty on Wireless
#The UTM is DHCP-server and gateway for hosts attached to wireless

auto eth1
iface eth1 inet manual

auto br1
iface br1 inet static
       bridge_ports eth1
       bridge_fd 9
       bridge_hello 2
       bridge_stp off

#External
#The physical host shall not have IP-connecty on External
#The UTM shall have three static IP-addresses: 147.13.10.2, 147.13.10.3 and 147.13.10.4
#netmask 255.255.255.128 

auto eth2
iface eth2 inet manual

auto br2
iface br2 inet static
       bridge_ports eth2
       bridge_fd 9
       bridge_hello 2
       bridge_stp off

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0 ErikFranzen over 12 years ago

After reading https://help.ubuntu.com/community/KVM/Networking#IP_Aliases it seems that when using bridged networking, the virtual guests are using the same IP-adress as the KVM-host?

However, the guests can use their own external IPs, it is called "IP aliases" in the guide.

One of my problems is that I do not want the KVM-host to have IP-connectivity on the physcial interfaces for Wireless and External. I am not sure how to achieve that with KVM.
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0 ErikFranzen over 12 years ago

After reading https://help.ubuntu.com/community/KVM/Networking#IP_Aliases it seems that when using bridged networking, the virtual guests are using the same IP-adress as the KVM-host?

However, the guests can use their own external IPs, it is called "IP aliases" in the guide.

One of my problems is that I do not want the KVM-host to have IP-connectivity on the physcial interfaces for Wireless and External. I am not sure how to achieve that with KVM.
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0 ErikFranzen over 12 years ago in reply to ErikFranzen

I have done some testing, and it seems like this is a working example:

# The loopback network interface
auto lo
iface lo inet loopback

#Internal network
auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
    address 192.168.1.250
        network 192.168.1.0
        netmask 255.255.255.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        dns-nameservers 192.168.1.1
        bridge_ports eth0
        bridge_fd 9
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off

#Wireless network
auto eth1
iface eth1 inet manual

auto br1
iface br1 inet static
        address 0.0.0.0
        bridge_ports eth1
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off
        bridge_fd 0
        bridge_maxwait 0

#External network
auto eth2
iface eth2 inet manual

auto br2
iface br2 inet static
        address 0.0.0.0
        bridge_ports eth2
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off
        bridge_fd 0
        bridge_maxwait 0

I now have a running UTM9 via KVM (using convirtue) for testing purposes.