Comment 2 for bug 1836949

output of recreate:

$ sh /tmp/recreate.sh
Read input format 'yaml' from 'bond-mtu-v1.yaml'.
Wrote output format 'sysconfig' to 'centos/sysconfig/from-v1/'

Read input format 'yaml' from 'bond-mtu-v2.yaml'.
Wrote output format 'sysconfig' to 'centos/sysconfig/from-v2/'

--- centos/sysconfig ----
diff -Naur centos/sysconfig/from-v1/etc/sysconfig/network-scripts/ifcfg-bond0 centos/sysconfig/from-v2/etc/sysconfig/network-scripts/ifcfg-bond0
--- centos/sysconfig/from-v1/etc/sysconfig/network-scripts/ifcfg-bond0 2019-07-17 14:51:47.196419026 -0400
+++ centos/sysconfig/from-v2/etc/sysconfig/network-scripts/ifcfg-bond0 2019-07-17 14:51:47.464420793 -0400
@@ -5,7 +5,6 @@
 BONDING_SLAVE1=enp0s1
 BOOTPROTO=none
 DEVICE=bond0
-MTU=1496
 NM_CONTROLLED=no
 ONBOOT=yes
 STARTMODE=auto
diff -Naur centos/sysconfig/from-v1/etc/sysconfig/network-scripts/ifcfg-bond0.1000 centos/sysconfig/from-v2/etc/sysconfig/network-scripts/ifcfg-bond0.1000
--- centos/sysconfig/from-v1/etc/sysconfig/network-scripts/ifcfg-bond0.1000 2019-07-17 14:51:47.196419026 -0400
+++ centos/sysconfig/from-v2/etc/sysconfig/network-scripts/ifcfg-bond0.1000 2019-07-17 14:51:47.464420793 -0400
@@ -3,7 +3,6 @@
 BOOTPROTO=none
 DEVICE=bond0.1000
 IPADDR=192.6.1.9
-MTU=1496
 NETMASK=255.255.255.0
 NM_CONTROLLED=no
 ONBOOT=yes
Read input format 'yaml' from 'bond-mtu-v1.yaml'.
Wrote output format 'eni' to 'ubuntu/eni/from-v1/'

Read input format 'yaml' from 'bond-mtu-v2.yaml'.
Wrote output format 'eni' to 'ubuntu/eni/from-v2/'

--- ubuntu/eni ----
diff -Naur ubuntu/eni/from-v1/etc/network/interfaces.d/50-cloud-init.cfg ubuntu/eni/from-v2/etc/network/interfaces.d/50-cloud-init.cfg
--- ubuntu/eni/from-v1/etc/network/interfaces.d/50-cloud-init.cfg 2019-07-17 14:51:47.744422640 -0400
+++ ubuntu/eni/from-v2/etc/network/interfaces.d/50-cloud-init.cfg 2019-07-17 14:51:48.024424486 -0400
@@ -9,7 +9,6 @@
 auto bond0
 iface bond0 inet manual
     bond-slaves none
- mtu 1496

 auto enp0s0
 iface enp0s0 inet manual
@@ -22,7 +21,6 @@
 auto bond0.1000
 iface bond0.1000 inet static
     address 192.6.1.9/24
- mtu 1496
     vlan-raw-device bond0
     vlan_id 1000

Read input format 'yaml' from 'bond-mtu-v1.yaml'.
Wrote output format 'netplan' to 'ubuntu/netplan/from-v1/'

Read input format 'yaml' from 'bond-mtu-v2.yaml'.
Wrote output format 'netplan' to 'ubuntu/netplan/from-v2/'

--- ubuntu/netplan ----
diff -Naur ubuntu/netplan/from-v1/etc/netplan/50-cloud-init.yaml ubuntu/netplan/from-v2/etc/netplan/50-cloud-init.yaml
--- ubuntu/netplan/from-v1/etc/netplan/50-cloud-init.yaml 2019-07-17 14:51:48.292426253 -0400
+++ ubuntu/netplan/from-v2/etc/netplan/50-cloud-init.yaml 2019-07-17 14:51:48.556427993 -0400
@@ -4,15 +4,14 @@
 # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
 # network: {config: disabled}
 network:
- version: 2
     bonds:
         bond0:
             interfaces:
             - enp0s0
             - enp0s1
             mtu: 1496
- enp0s0: {}
- enp0s1: {}
+ parameters: {}
+ version: 2
     vlans:
         bond0.1000:
             addresses: