diff options
| -rw-r--r-- | cloudinit/net/__init__.py | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/cloudinit/net/__init__.py b/cloudinit/net/__init__.py index 800ffe61..e5b45926 100644 --- a/cloudinit/net/__init__.py +++ b/cloudinit/net/__init__.py @@ -306,24 +306,34 @@ def find_fallback_network_device(): connected = [] possibly_connected = [] for interface in potential_interfaces: - sysfs_carrier = os.path.join(SYS_CLASS_NET, interface, 'carrier') - carrier = int(util.load_file(sysfs_carrier).strip()) - if carrier: - connected.append(interface) - continue + try: + sysfs_carrier = os.path.join(SYS_CLASS_NET, interface, 'carrier') + carrier = int(util.load_file(sysfs_carrier).strip()) + if carrier: + connected.append(interface) + continue + except OSError: + pass # check if nic is dormant or down, as this may make a nick appear to # not have a carrier even though it could acquire one when brought # online by dhclient - sysfs_dormant = os.path.join(SYS_CLASS_NET, interface, 'dormant') - dormant = int(util.load_file(sysfs_dormant).strip()) - if dormant: - possibly_connected.append(interface) - continue - sysfs_operstate = os.path.join(SYS_CLASS_NET, interface, 'operstate') - operstate = util.load_file(sysfs_operstate).strip() - if operstate in ['dormant', 'down', 'lowerlayerdown', 'unknown']: - possibly_connected.append(interface) - continue + try: + sysfs_dormant = os.path.join(SYS_CLASS_NET, interface, 'dormant') + dormant = int(util.load_file(sysfs_dormant).strip()) + if dormant: + possibly_connected.append(interface) + continue + except OSError: + pass + try: + sysfs_operstate = os.path.join(SYS_CLASS_NET, interface, + 'operstate') + operstate = util.load_file(sysfs_operstate).strip() + if operstate in ['dormant', 'down', 'lowerlayerdown', 'unknown']: + possibly_connected.append(interface) + continue + except OSError: + pass # don't bother with interfaces that might not be connected if there are # some that definitely are |