* Fri Sep 15 2023 Camilla Conte <cconte@redhat.com> - 23.1.1-12
- Resolves: RHEL-2323 - 0031-net-fix-ipv6_dhcpv6_stateful-stateless-slaac-configu.patch [bz#2227767] - Resolves: bz#2227767
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RH Virt Maint Bot
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From 53625ea5705ced07738fdb7c23d7f8952a62f2da Mon Sep 17 00:00:00 2001
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From: Ani Sinha <anisinha@redhat.com>
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Date: Thu, 7 Sep 2023 02:36:52 +0530
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Subject: [PATCH] net: fix ipv6_dhcpv6_stateful/stateless/slaac configuration
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for rhel (#4395)
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When network type is ipv6_dhcpv6-stateful/stateless/slaac, cloud-init seems to
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enable dhcp for both ipv4 and ipv6. Network manager prefers dhcp over ipv4 and
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hence dhcp6 is not used to obtain the IP address. This is incorrect.
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For only ipv6_dhcpv6-stateful/stateless/slaac networks, we should set:
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ipv4.method = disabled // disables all ipv4 dhcp
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For ifcfg files (sysconfig renderer), the corresponding changes should be:
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BOOTPROTO = none // instead of dhcp so that dhcp4 is disabled.
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Additionally, for only ipv6_dhcpv6_stateful, we should set:
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ipv6.may-fail = no // dhcp6 must succeed.
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which translates to the following ifcfg setting:
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IPV6_FAILURE_FATAL = yes // so that dhcp6 should succeed.
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This patch fixes this for rhel. The patch has been tested by Red Hat QE.
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RHBZ: 2046491
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fixes: f550c8765ca03d3 ("Adding BOOTPROTO = dhcp to render sysconfig dhcp6 stateful on RHEL (#685)")
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Signed-off-by: Ani Sinha <anisinha@redhat.com>
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(cherry picked from commit fd214a1243011275c5dffb92b481c235e4c7a1bf)
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---
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cloudinit/net/network_manager.py | 9 +++++++++
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cloudinit/net/sysconfig.py | 6 +++---
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tests/unittests/test_net.py | 9 ++++++++-
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3 files changed, 20 insertions(+), 4 deletions(-)
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diff --git a/cloudinit/net/network_manager.py b/cloudinit/net/network_manager.py
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index 8047f796..7a32691e 100644
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--- a/cloudinit/net/network_manager.py
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+++ b/cloudinit/net/network_manager.py
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@@ -105,6 +105,14 @@ class NMConnection:
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if self.config[family]["method"] == "auto" and method == "manual":
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return
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+ if (
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+ subnet_type == "ipv6_dhcpv6-stateful"
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+ or subnet_type == "ipv6_dhcpv6-stateless"
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+ or subnet_type == "ipv6_slaac"
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+ ):
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+ # set ipv4 method to 'disabled' to align with sysconfig renderer.
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+ self._set_default("ipv4", "method", "disabled")
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+
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self.config[family]["method"] = method
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self._set_default(family, "may-fail", "false")
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@@ -342,6 +350,7 @@ class Renderer(renderer.Renderer):
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def __init__(self, config=None):
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self.connections = {}
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+ self.config = config
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def get_conn(self, con_id):
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return self.connections[con_id]
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diff --git a/cloudinit/net/sysconfig.py b/cloudinit/net/sysconfig.py
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index f2c7c92c..af746599 100644
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--- a/cloudinit/net/sysconfig.py
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+++ b/cloudinit/net/sysconfig.py
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@@ -436,13 +436,13 @@ class Renderer(renderer.Renderer):
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iface_cfg["BOOTPROTO"] = "dhcp6"
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iface_cfg["DHCLIENT6_MODE"] = "managed"
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# only if rhel AND dhcpv6 stateful
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- elif (
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- flavor == "rhel" and subnet_type == "ipv6_dhcpv6-stateful"
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+ elif flavor == "rhel" and (
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+ subnet_type == "ipv6_dhcpv6-stateful"
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):
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- iface_cfg["BOOTPROTO"] = "dhcp"
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iface_cfg["DHCPV6C"] = True
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iface_cfg["IPV6INIT"] = True
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iface_cfg["IPV6_AUTOCONF"] = False
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+ iface_cfg["IPV6_FAILURE_FATAL"] = True
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else:
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iface_cfg["IPV6INIT"] = True
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# Configure network settings using DHCPv6
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diff --git a/tests/unittests/test_net.py b/tests/unittests/test_net.py
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index d49da696..e1cd53c2 100644
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--- a/tests/unittests/test_net.py
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+++ b/tests/unittests/test_net.py
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@@ -1760,6 +1760,9 @@ NETWORK_CONFIGS = {
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method=auto
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may-fail=false
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+ [ipv4]
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+ method=disabled
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+
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"""
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),
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},
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@@ -1872,6 +1875,9 @@ NETWORK_CONFIGS = {
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method=auto
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may-fail=false
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+ [ipv4]
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+ method=disabled
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+
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"""
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),
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},
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@@ -1920,11 +1926,12 @@ NETWORK_CONFIGS = {
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"ifcfg-iface0": textwrap.dedent(
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"""\
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AUTOCONNECT_PRIORITY=120
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- BOOTPROTO=dhcp
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+ BOOTPROTO=none
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DEVICE=iface0
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DHCPV6C=yes
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IPV6INIT=yes
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IPV6_AUTOCONF=no
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+ IPV6_FAILURE_FATAL=yes
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IPV6_FORCE_ACCEPT_RA=yes
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DEVICE=iface0
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ONBOOT=yes
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@ -1,6 +1,6 @@
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Name: cloud-init
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Version: 23.1.1
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Release: 11%{?dist}
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Release: 12%{?dist}
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Summary: Cloud instance init scripts
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License: ASL 2.0 or GPLv3
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URL: http://launchpad.net/cloud-init
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@ -38,6 +38,7 @@ Patch27: 0027-Handle-non-existent-ca-cert-config-situation-2073.patch
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Patch28: 0028-logging-keep-current-file-mode-of-log-file-if-its-st.patch
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Patch29: 0029-DS-VMware-modify-a-few-log-level-4284.patch
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Patch30: 0030-NM-renderer-set-default-IPv6-addr-gen-mode-for-all-i.patch
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Patch31: 0031-net-fix-ipv6_dhcpv6_stateful-stateless-slaac-configu.patch
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BuildArch: noarch
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@ -209,16 +210,19 @@ fi
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%postun
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%systemd_postun cloud-config.service cloud-config.target cloud-final.service cloud-init.service cloud-init.target cloud-init-local.service
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if [ -f /etc/ssh/sshd_config.d/50-cloud-init.conf ] ; then
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echo "/etc/ssh/sshd_config.d/50-cloud-init.conf not removed"
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fi
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if [ $1 -eq 0 ] ; then
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# warn during package removal not upgrade
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if [ -f /etc/ssh/sshd_config.d/50-cloud-init.conf ] ; then
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echo "/etc/ssh/sshd_config.d/50-cloud-init.conf not removed"
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fi
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if [ -f /etc/NetworkManager/conf.d/99-cloud-init.conf ] ; then
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echo "/etc/NetworkManager/conf.d/99-cloud-init.conf not removed"
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fi
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if [ -f /etc/NetworkManager/conf.d/99-cloud-init.conf ] ; then
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echo "/etc/NetworkManager/conf.d/99-cloud-init.conf not removed"
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fi
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if [ -f /etc/NetworkManager/conf.d/30-cloud-init-ip6-addr-gen-mode.conf ] ; then
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echo "/etc/NetworkManager/conf.d/30-cloud-init-ip6-addr-gen-mode.conf not removed"
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if [ -f /etc/NetworkManager/conf.d/30-cloud-init-ip6-addr-gen-mode.conf ] ; then
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echo "/etc/NetworkManager/conf.d/30-cloud-init-ip6-addr-gen-mode.conf not removed"
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fi
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fi
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%files
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@ -258,6 +262,11 @@ fi
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%config(noreplace) %{_sysconfdir}/rsyslog.d/21-cloudinit.conf
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%changelog
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* Fri Sep 15 2023 Camilla Conte <cconte@redhat.com> - 23.1.1-12
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- Resolves: RHEL-2323
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- 0031-net-fix-ipv6_dhcpv6_stateful-stateless-slaac-configu.patch [bz#2227767]
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- Resolves: bz#2227767
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* Thu Aug 17 2023 Miroslav Rezanina <mrezanin@redhat.com> - 23.1.1-11
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- Resolves: bz#2232296
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