" # curl http://169.254.169.254/openstack/2018-08-27/network_data.json
{"links": [{"id": "tapa035fb68-01", "vif_id": 
"a035fb68-010c-42e3-8da7-ea3c36a0d607", "type": "ovs", "mtu": 8942, 
"ethernet_mac_address": "fa:16:3e:31:26:f7"}], "networks": [{"id": "network0", 
"type": "ipv4_dhcp", "link": "tapa035fb68-01", "network_id": 
"b4ef84c0-1235-48a8-aaf7-03fab7ef5367"}], "services": []}"

How is cloud-init to know from this network-config.json that DHCP will
provide an MTU value?  How does it know that it should ignore the
provided MTU?  If DHCP is providing MTU, should network-config.json then
not provide the MTU value?


** Also affects: netplan.io (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: cloud-init
       Status: New => Incomplete

** Changed in: netplan.io (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1899487

Title:
  cloud-init hard codes MTU configuration at initial deploy time

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