tripleo-heat-templates/releasenotes/notes/set-tenant-net-mtu-as-neutr...

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---
features:
- |
The MTU defined for the ``Tenant`` network in network_data is now used to
set neutron's ``global_physnet_mtu`` unless the ``NeutronGlobalPhysnetMtu``
parameter is used to override the default. (Neutron uses the
``global_physnet_mtu`` value to calculate MTU for all virtual network
components. For flat and VLAN networks, neutron uses this value without
modification. For overlay networks such as VXLAN, neutron automatically
subtracts the overlay protocol overhead from this value.)