Hostname is not registered by DNSMASQ

[electrocucaracha]

According to the vagrant-libvirt documentation Libvirt uses DNSMASQ as DHCP service to register the IP addresses to allow East-West Traffic through hostnames.

• Vagrant v2.2.6
• vagrant-libvirt v0.0.45
• Dnsmasq v2.79
• Libvirt v4.0.0
• QEMU 2.11.1

Vagrant.configure("2") do |config|
  config.vm.synced_folder '.', '/vagrant', disabled: true
  config.vm.box = 'opensuse/Tumbleweed.x86_64'
  config.vm.box_version = '1.0.20191210'
  ["vm01", "vm02"].each do |vm|
    config.vm.define "#{vm}" do |nodeconfig|
      nodeconfig.vm.hostname = "#{vm}"
    end
  end
end

$ sudo cat /var/lib/libvirt/dnsmasq/virbr?.status
[
  {
    "ip-address": "192.168.121.89",
    "mac-address": "52:54:00:56:a4:36",
    "client-id": "ff:00:56:a4:36:00:01:00:01:25:85:91:3e:52:54:00:56:a4:36",
    "expiry-time": 1576198869
  },
  {
    "ip-address": "192.168.121.135",
    "mac-address": "52:54:00:02:8c:fa",
    "client-id": "ff:00:02:8c:fa:00:01:00:01:25:85:91:3e:52:54:00:02:8c:fa",
    "expiry-time": 1576198869
  }
]
$ vagrant ssh vm01 -- ping -c 3 vm02
PING vm02 (192.168.121.101) 56(84) bytes of data.
From 192.168.121.89 (192.168.121.89) icmp_seq=1 Destination Host Unreachable
From 192.168.121.89 (192.168.121.89) icmp_seq=2 Destination Host Unreachable
From 192.168.121.89 (192.168.121.89) icmp_seq=3 Destination Host Unreachable

--- vm02 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2046ms
pipe 3
$ vagrant ssh vm01 -- ping -c 3 192.168.121.89
PING 192.168.121.89 (192.168.121.89) 56(84) bytes of data.
64 bytes from 192.168.121.89: icmp_seq=1 ttl=64 time=0.028 ms
64 bytes from 192.168.121.89: icmp_seq=2 ttl=64 time=0.062 ms
64 bytes from 192.168.121.89: icmp_seq=3 ttl=64 time=0.027 ms

--- 192.168.121.89 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2041ms
rtt min/avg/max/mdev = 0.027/0.039/0.062/0.016 ms

If I change the Vagrantfile for using a CentOS vagrant box I get the following results.

$ sudo cat /var/lib/libvirt/dnsmasq/virbr?.status
[
  {
    "ip-address": "192.168.121.101",
    "mac-address": "52:54:00:89:6e:61",
    "hostname": "vm02",
    "expiry-time": 1576198670
  },
  {
    "ip-address": "192.168.121.30",
    "mac-address": "52:54:00:4e:92:9b",
    "hostname": "vm01",
    "expiry-time": 1576198670
  }
]
$ vagrant ssh vm01 -- ping -c 3 vm02
PING vm02 (192.168.121.101) 56(84) bytes of data.
64 bytes from vm02 (192.168.121.101): icmp_seq=1 ttl=64 time=0.479 ms
64 bytes from vm02 (192.168.121.101): icmp_seq=2 ttl=64 time=0.471 ms
64 bytes from vm02 (192.168.121.101): icmp_seq=3 ttl=64 time=0.477 ms

--- vm02 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 0.471/0.475/0.479/0.025 ms