Gentoo generates broken network config

This bug was originally filed in Launchpad as [LP: #1843686](https://bugs.launchpad.net/cloud-init/+bug/1843686)

Launchpad details

affected_projects = []

assignee = None

assignee_name = None

date_closed = None

date_created = 2019-09-12T08:36:57.613358+00:00

date_fix_committed = None

date_fix_released = None

id = 1843686

importance = wishlist

is_complete = False

lp_url = https://bugs.launchpad.net/cloud-init/+bug/1843686

milestone = None

owner = monstermunchkin

owner_name = Thomas Hipp

private = False

status = triaged

submitter = monstermunchkin

submitter_name = Thomas Hipp

tags = []

duplicates = []

_Launchpad user **Thomas Hipp(monstermunchkin)** wrote on 2019-09-12T08:36:57.613358+00:00_

As the title says, Gentoo generates an unusable network config. In includes 'mac_eth0' although no such thing was specified. Also, it adds the unnecessary 'netmask' keyword in the config.

The network-config (/var/lib/cloud/seed/nocloud-net/network-config):
#cloud-config
version: 1
config:
- type: physical
name: eth0
subnets:
- type: static
address: 1.2.3.4/24
gateway: 1.2.3.1
dns_nameservers:
- 1.2.3.10

The broken result (/etc/conf.d/net.eth0):
config_eth0="1.2.3.4/24 netmask None"
mac_eth0="None"
routes_eth0="default via 1.2.3.1"
dns_servers_eth0="('1.2.3.10')"

A correctly working config would be:
config_eth0="1.2.3.4/24"
routes_eth0="default via 1.2.3.1"
dns_servers_eth0="('1.2.3.10')"

I'd be great if this could be fixed.