cloud-init/SOURCES/ci-cloudinit-net-handle-two-different-routes-for-the-sa.patch

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2021-12-21 09:12:43 +00:00
From 0a6a89e6b243e587daf8ce356fccb5d6a6acf089 Mon Sep 17 00:00:00 2001
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Date: Tue, 7 Dec 2021 09:56:58 +0100
Subject: [PATCH] cloudinit/net: handle two different routes for the same ip
(#1124)
RH-Author: Emanuele Giuseppe Esposito <eesposit@redhat.com>
RH-MergeRequest: 37: cloudinit/net: handle two different routes for the same ip (#1124)
RH-Commit: [1/1] 9cd9c38606bfe2395d808a48ac986dce7624e147
RH-Bugzilla: 2028756
RH-Acked-by: Mohamed Gamal Morsy <mmorsy@redhat.com>
RH-Acked-by: Eduardo Otubo <otubo@redhat.com>
commit 0e25076b34fa995161b83996e866c0974cee431f
Author: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Date: Mon Dec 6 18:34:26 2021 +0100
cloudinit/net: handle two different routes for the same ip (#1124)
If we set a dhcp server side like this:
$ cat /var/tmp/cloud-init/cloud-init-dhcp-f0rie5tm/dhcp.leases
lease {
...
option classless-static-routes 31.169.254.169.254 0.0.0.0,31.169.254.169.254
10.112.143.127,22.10.112.140 0.0.0.0,0 10.112.140.1;
...
}
cloud-init fails to configure the routes via 'ip route add' because to there are
two different routes for 169.254.169.254:
$ ip -4 route add 192.168.1.1/32 via 0.0.0.0 dev eth0
$ ip -4 route add 192.168.1.1/32 via 10.112.140.248 dev eth0
But NetworkManager can handle such scenario successfully as it uses "ip route append".
So change cloud-init to also use "ip route append" to fix the issue:
$ ip -4 route append 192.168.1.1/32 via 0.0.0.0 dev eth0
$ ip -4 route append 192.168.1.1/32 via 10.112.140.248 dev eth0
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
RHBZ: #2003231
Conflicts:
cloudinit/net/tests/test_init.py: a mock call in
test_ephemeral_ipv4_network_with_rfc3442_static_routes is not
present downstream.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
cloudinit/net/__init__.py | 2 +-
cloudinit/net/tests/test_init.py | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/cloudinit/net/__init__.py b/cloudinit/net/__init__.py
index 385b7bcc..003efa2a 100644
--- a/cloudinit/net/__init__.py
+++ b/cloudinit/net/__init__.py
@@ -1138,7 +1138,7 @@ class EphemeralIPv4Network(object):
if gateway != "0.0.0.0/0":
via_arg = ['via', gateway]
subp.subp(
- ['ip', '-4', 'route', 'add', net_address] + via_arg +
+ ['ip', '-4', 'route', 'append', net_address] + via_arg +
['dev', self.interface], capture=True)
self.cleanup_cmds.insert(
0, ['ip', '-4', 'route', 'del', net_address] + via_arg +
diff --git a/cloudinit/net/tests/test_init.py b/cloudinit/net/tests/test_init.py
index 946f8ee2..2350837b 100644
--- a/cloudinit/net/tests/test_init.py
+++ b/cloudinit/net/tests/test_init.py
@@ -719,10 +719,10 @@ class TestEphemeralIPV4Network(CiTestCase):
['ip', '-family', 'inet', 'link', 'set', 'dev', 'eth0', 'up'],
capture=True),
mock.call(
- ['ip', '-4', 'route', 'add', '169.254.169.254/32',
+ ['ip', '-4', 'route', 'append', '169.254.169.254/32',
'via', '192.168.2.1', 'dev', 'eth0'], capture=True),
mock.call(
- ['ip', '-4', 'route', 'add', '0.0.0.0/0',
+ ['ip', '-4', 'route', 'append', '0.0.0.0/0',
'via', '192.168.2.1', 'dev', 'eth0'], capture=True)]
expected_teardown_calls = [
mock.call(
--
2.27.0