v1.3.0

• Housekeeping and code cleanup
• macvlan: remove tmp interface when name already used in netns
• Add support for route metrics
• netlink: return better error if ipv6 is disabled
• macvlan: fix name collision on hostns
• Ignore dns-enabled for macvlan (BZ2137320)
• better errors on teardown
• allow customer dns servers for containers
• do not set route for internal-only networks
• do not use ipv6 autoconf