[libvirt] set a different default gateway in an isolated network

[pichon]

Hello,

I would like to set a specify default gateway for my VMs. However I’m not succeeding 

Here after is the isolated lan, where I added the statement   <route address='10.0.0.0' prefix='8' gateway='10.10.0.7’/> where my aim is to route to the 10.10.0.7 

What should I do , to make it works ?

Thanks

<network>
<name>prd-private-lan</name>
<uuid>255083f4-05a1-4a24-bc66-d3a3a9ab0724</uuid>
<bridge name='virbr3' stp='off' delay='0'/>
<mac address='52:54:00:08:1e:d8'/>
<domain name='prd.pipiche.net'/>
<dns>
  <forwarder addr='8.8.4.4'/>
  <forwarder addr='8.8.8.8'/>
</dns>
<ip address='10.10.0.1' netmask='255.255.255.0'>
  <dhcp>
    <range start='10.10.0.128' end='10.10.0.254'/>
    <host mac='52:54:10:b6:35:ca'  ip='10.10.0.3'/>
    <host mac='52:54:10:5f:92:05'  ip='10.10.0.7'/>
    <host mac='52:54:10:7d:3a:3f'  ip='10.10.0.10'/>
    <host mac='52:54:10:30:93:56'  ip='10.10.0.21'/>
    <host mac='52:54:10:78:c1:c2'  ip='10.10.0.22'/>
    <host mac='52:54:10:64:00:21'  ip='10.10.0.25'/>
    <host mac='52:54:10:5a:5f:63'  ip='10.10.0.26'/>
    <host mac='52:54:10:4c:b2:61'  ip='10.10.0.27'/>
    <host mac='52:54:10:62:de:5f' ' ip='10.10.0.62'/>
  </dhcp>
</ip>
<route address='10.0.0.0' prefix='8' gateway='10.10.0.7'/>
</network>

When looking on the VM (guest) the route is not correctly set

route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.10.0.0       0.0.0.0         255.255.255.0   U     100    0        0 ens4

arp -a
? (10.10.0.1) at 52:54:00:08:1e:d8 [ether] on ensue


ifconfig
ens4: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
      inet 10.10.0.27  netmask 255.255.255.0  broadcast 10.10.0.255
      inet6 fe80::5054:10ff:fe4c:b261  prefixlen 64  scopeid 0x20<link>
      ether 52:54:10:4c:b2:61  txqueuelen 1000  (Ethernet)
      RX packets 1805  bytes 153644 (150.0 KiB)
      RX errors 0  dropped 0  overruns 0  frame 0
      TX packets 1745  bytes 136075 (132.8 KiB)
      TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0