kolla-ansible/releasenotes/notes/ovn-emit-need-to-frag-2d669...

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---
upgrade:
- |
Enabled ``ovn_emit_need_to_frag`` setting by default. It is useful when
external network's MTU is lower then internal geneve networks.
Host kernel needs to be in version >= 5.2 for this option to work.
All Kolla supported host operating systems have higher kernel version.