Upon upgrading to Ubuntu 22.04, it seems that the way to specify gateway4 and gateway6 in netplan has been deprecated.
- Error Messages
`gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.
`gateway6` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.
- Before Fix
network:
ethernets:
ens3:
addresses:
- 192.168.0.2/24
gateway4: 192.168.0.1
nameservers:
addresses:
- 8.8.8.8
- 8.8.4.4
search: []
optional: true
version: 2
- After Fix
network:
ethernets:
ens3:
addresses:
- 192.168.0.2/24
routes:
- to: default
via: 192.168.0.1
nameservers:
addresses:
- 8.8.8.8
- 8.8.4.4
search: []
optional: true
version: 2
The same method applies for IPv6.