Ubuntu Core 18 – nano editor permission denied for /etc/netplan/config.yaml

Using ubuntu core trying to edit netplan config in /etc/netplan/00-snapd-config.yaml

This command sudo nano /etc/netplan/00-snapd-config.yaml

Outputs [ Error reading /etc/netplan/00-snapd-config.yaml: Permission denied ]

nano was installed with sudo snap install nano Is there a way to edit /etc configuration files with a snap store text editor?