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From bc2e1a64e64bddf04fd3e27c79432facbedca182 Mon Sep 17 00:00:00 2001
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From: Ryan McCabe <rmccabe@redhat.com>
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Date: Tue, 13 Jun 2017 11:45:07 -0400
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Subject: [PATCH] Fix ipv6 subnet detection
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Add better ipv6 subnet detection that was added as part of a
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much larger patch set in upstream commit
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ef18b8ac4cf7e3dfd98830fbdb298380a192a0fc
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Related: rhbz#1438082
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X-approved-upstream: true
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Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
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---
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cloudinit/net/sysconfig.py | 15 +++++++++++++--
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1 file changed, 13 insertions(+), 2 deletions(-)
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diff --git a/cloudinit/net/sysconfig.py b/cloudinit/net/sysconfig.py
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index ef80d99..6a0dd43 100644
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--- a/cloudinit/net/sysconfig.py
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+++ b/cloudinit/net/sysconfig.py
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@@ -11,6 +11,17 @@ from cloudinit import util
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from . import renderer
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+def _subnet_is_ipv6(subnet):
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+ """Common helper for checking network_state subnets for ipv6."""
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+ # 'static6' or 'dhcp6'
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+ if subnet['type'].endswith('6'):
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+ # This is a request for DHCPv6.
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+ return True
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+ elif subnet['type'] == 'static' and ":" in subnet['address']:
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+ return True
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+ return False
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+
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+
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def _make_header(sep='#'):
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lines = [
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"Created by cloud-init on instance boot automatically, do not edit.",
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@@ -286,7 +297,7 @@ class Renderer(renderer.Renderer):
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# but should remain 'none'
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# if iface_cfg['BOOTPROTO'] == 'none':
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# iface_cfg['BOOTPROTO'] = 'static'
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- if subnet.get('ipv6'):
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+ if _subnet_is_ipv6(subnet):
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iface_cfg['IPV6INIT'] = True
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else:
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raise ValueError("Unknown subnet type '%s' found"
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@@ -303,7 +314,7 @@ class Renderer(renderer.Renderer):
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elif subnet_type in ['dhcp4', 'dhcp']:
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continue
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elif subnet_type == 'static':
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- if subnet.get('ipv6'):
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+ if _subnet_is_ipv6(subnet):
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ipv6_index = ipv6_index + 1
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if 'netmask' in subnet and str(subnet['netmask']) != "":
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ipv6_cidr = (subnet['address'] +
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