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-rw-r--r--cloudinit/net/eni.py22
1 files changed, 16 insertions, 6 deletions
diff --git a/cloudinit/net/eni.py b/cloudinit/net/eni.py
index 5f33e177..86d2a830 100644
--- a/cloudinit/net/eni.py
+++ b/cloudinit/net/eni.py
@@ -68,8 +68,14 @@ def _iface_add_subnet(iface, subnet):
# TODO: switch to valid_map for attrs
-
-def _iface_add_attrs(iface):
+def _iface_add_attrs(iface, index):
+ # If the index is non-zero, this is an alias interface. Alias interfaces
+ # represent additional interface addresses, and should not have additional
+ # attributes. (extra attributes here are almost always either incorrect,
+ # or are applied to the parent interface.) So if this is an alias, stop
+ # right here.
+ if index != 0:
+ return []
content = []
ignore_map = [
'control',
@@ -363,17 +369,21 @@ class Renderer(renderer.Renderer):
iface['index'] = index
iface['mode'] = subnet['type']
iface['control'] = subnet.get('control', 'auto')
+ subnet_inet = 'inet'
if iface['mode'].endswith('6'):
- iface['inet'] += '6'
+ # This is a request for DHCPv6.
+ subnet_inet += '6'
elif iface['mode'] == 'static' and ":" in subnet['address']:
- iface['inet'] += '6'
+ # This is a static IPv6 address.
+ subnet_inet += '6'
+ iface['inet'] = subnet_inet
if iface['mode'].startswith('dhcp'):
iface['mode'] = 'dhcp'
lines = list(
_iface_start_entry(iface, index) +
_iface_add_subnet(iface, subnet) +
- _iface_add_attrs(iface)
+ _iface_add_attrs(iface, index)
)
for route in subnet.get('routes', []):
lines.extend(self._render_route(route, indent=" "))
@@ -390,7 +400,7 @@ class Renderer(renderer.Renderer):
if 'bond-master' in iface:
lines.append("auto {name}".format(**iface))
lines.append("iface {name} {inet} {mode}".format(**iface))
- lines.extend(_iface_add_attrs(iface))
+ lines.extend(_iface_add_attrs(iface, index=0))
sections.append(lines)
return sections