---
network::interfaces_hash:
  'eth0':
    ipaddress: '172.16.0.20'
    netmask:   '255.255.248.0'
    gateway:   '172.16.0.1'
    mtu:       '1500'
    peerdns:   'yes'
    dns1:      "%{hiera('service__address__proxy')}"
    domain:    'mgmt.iaas.intern'
    defroute:  'no'
  'eth1':
    ipaddress: '172.18.0.20'
    netmask:   '255.255.248.0'
    gateway:   '172.18.0.1'
    defroute:  'yes'

---
network::interfaces_hash:
  'eth0':
    ipaddress: '172.16.0.20'
    netmask:   '255.255.248.0'
    gateway:   '172.16.0.1'
    mtu:       '1500'
    peerdns:   'yes'
    dns1:      "%{hiera('service__address__proxy')}"
    domain:    'mgmt.iaas.intern'
    defroute:  'yes'
  'eth1':
    ipaddress: '172.18.0.20'
    netmask:   '255.255.248.0'
    gateway:   '172.18.0.1'
    defroute:  'no'

Change default route - again - on bgo master node
Change default route - again - on bgo master node
