Have a Ubuntu Server 20.04 and 2 address, one in eno1 interface with first default public address and a failover with second address.
I can create a virtual interface using a netplan called failover1 and works fine:
network:
version: 2
ethernets:
eno1:
dhcp4: true
match:
macaddress: xx:xx:xx:xx:xx:xx
set-name: eno1
bridges:
failover1:
addresses:
- xxx.xxx.xxx.xxx/32
dhcp4: true
root@server:~# ip addr
...
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet xxx.xxx.xxx.xxx/24 brd xxx.xxx.xxx.xxx scope global dynamic eno1
valid_lft 86125sec preferred_lft 86125sec
...
4: failover1: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet xxx.xxx.xxx.xxx/32 scope global failover1
valid_lft forever preferred_lft forever
My virtual machine works fine using the default nat network:
<network>
<name>default</name>
<uuid>...</uuid>
<forward mode='nat'/>
<bridge name='virbr0' stp='on' delay='0'/>
<mac address='xx:xx:xx:xx:xx:xx'/>
<ip address='192.168.122.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.122.2' end='192.168.122.254'/>
</dhcp>
</ip>
</network>
When navigate using a web browser use the primary public address, but need use the secondary address only.
I try creating a phisical brigde using:
<network>
<name>bridged-network</name>
<forward mode="bridge" />
<bridge name="failover1" />
</network>
But virtual machine has not internet access, but from host using wget works fine:
wget -qO- http://checkip.dyndns.com/ --bind-address xxx.xxx.xxx.xxx
<html><head><title>Current IP Check</title></head><body>Current IP Address: xxx.xxx.xxx.xxx</body></html>
I try using a passthrout but does not work:
<network>
<name>passthrough</name>
<forward mode='hostdev' managed='yes'>
<pf dev='failover1'/>
</forward>
</network>
root@server:~# virsh net-start passthrough
error: Failed to start network passthrough
error: internal error: No usable Vf's present on SRIOV PF failover1
I try using direct network device in mode vepa and brigde:
<interface type='direct'>
<source dev='failover1' mode='vepa'/>
</interface>
But does not have internet connection from vm.
How to set the specific failover address or interface to the virtual machine?
