Both host and guest are running Fedora 26 server edition. Host is from OVH, guest is ISO from Fedora directly.
I've trimmed anything regarding TXRX and loopbacks for the sake of brevity.
Main IP a.a.a.17
Main IP Gateway a.a.a.254
Failover IP b.b.b.192
Failover MAC 20:00:00:10:5f:d7
Host ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet a.a.a.17 netmask 255.255.255.0 broadcast a.a.a.255
ether 70:54:d2:1a:9f:5c txqueuelen 1000 (Ethernet)
device interrupt 20 memory 0xfe500000-fe520000
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:3a:fb:f8 txqueuelen 1000 (Ethernet)
vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc00:ff:fe10:5fd7 prefixlen 64 scopeid 0x20<link>
ether fe:00:00:10:5f:d7 txqueuelen 1000 (Ethernet)
Guest ifconfig
ens3: flags=4163(UP,BROADCAST,RUNNING,MULTICAST)
inet b.b.b.192 netmask 255.255.255.255 broadcast b.b.b.192
ether 02:00:00:10:5f:d7 txqueuelen 1000 (Ethernet)
KVM network setup
<interface type='network'>
<mac address='02:00:00:10:5f:d7'/>
<source network='default' bridge='virbr0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
Host brctl
bridge name bridge id STP enabled interfaces
br0 8000.000000000000 no
virbr0 8000.5254003afbf8 yes virbr0-nic
vnet0
Guest arp -an
? (a.a.a.254) at (incomplete) on ens3
Currently, the guest cannot reach the internet. I've read and reread every article specific to OVH and even just general libvirt documentation, stumped at this point. This is my first time dealing with straight KVM instead of using a system like ESXi, but I deal with cli quite often. I appreciate any assistance that can be provided.