x/vmware-nsx
Code Issues Proposed changes

Merge "Check for IPv6 file before reading"

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Jenkins 2014-08-30 00:20:38 +00:00 committed by Gerrit Code Review
commit 8c29430d00
1 changed files with 13 additions and 3 deletions
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16
neutron/common/ipv6_utils.py
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@ -16,10 +16,15 @@
"""
IPv6-related utilities and helper functions.
"""
import os
import netaddr
from neutron.openstack.common.gettextutils import _LI
from neutron.openstack.common import log
LOG = log.getLogger(__name__)
_IS_IPV6_ENABLED = None
@ -47,7 +52,12 @@ def is_enabled():
if _IS_IPV6_ENABLED is None:
disabled_ipv6_path = "/proc/sys/net/ipv6/conf/default/disable_ipv6"
with open(disabled_ipv6_path, 'r') as f:
disabled = f.read().strip()
_IS_IPV6_ENABLED = disabled == "0"
if os.path.exists(disabled_ipv6_path):
with open(disabled_ipv6_path, 'r') as f:
disabled = f.read().strip()
_IS_IPV6_ENABLED = disabled == "0"
else:
_IS_IPV6_ENABLED = False
if not _IS_IPV6_ENABLED:
LOG.info(_LI("IPv6 is not enabled on this system."))
return _IS_IPV6_ENABLED