route files are not written on SUSE distros

This bug was originally filed in Launchpad as [LP: #1812117](https://bugs.launchpad.net/cloud-init/+bug/1812117)

Launchpad details

affected_projects = []

assignee = None

assignee_name = None

date_closed = 2019-05-10T18:07:53.733563+00:00

date_created = 2019-01-16T22:12:53.777056+00:00

date_fix_committed = 2019-03-12T21:08:28.884257+00:00

date_fix_released = 2019-05-10T18:07:53.733563+00:00

id = 1812117

importance = undecided

is_complete = True

lp_url = https://bugs.launchpad.net/cloud-init/+bug/1812117

milestone = None

owner = rjschwei

owner_name = Robert Schweikert

private = False

status = fix_released

submitter = rjschwei

submitter_name = Robert Schweikert

tags = []

duplicates = []

_Launchpad user **Robert Schweikert(rjschwei)** wrote on 2019-01-16T22:12:53.777056+00:00_

On SUSE distros the routes need to be written to ifroute-* files.

At present the sysconfig renderer does not write the default routes to ifroute-* files, rather the default rout information is set in ifcfg-*. However the values DEFROUTE=yes and IPV6_DEFAULTGW have no meaning in SUSE ifcfg-* files and are ignored. The routes for an interface are loaded from the ifroute-* file.

The file content is expected to be in the format

Destination Gateway Netmask Interface Options

The following config shown at https://pastebin.ubuntu.com/p/jjMKVTSK9v/ should produce 3 ifroute-* files

ifroute-eth1
default 10.80.124.81

ifroute-eth2
default 192.168.1.254

ifroute-eth3
default fe80::10:80:124:81