Usually, when the method is "auto" we want to avoid configuring routes
until the automatic method completes. To achieve that, we clear the
"allow_routes_without_address" flag of l3cds when the method is "auto".
For VPNs, IP configurations with only routes are perfectly valid,
therefore set the flag.
(cherry picked from commit d1ffdb28eb)
The name "dhcp_enabled" is misleading because the flag is set for
method=auto, which doesn't necessarily imply DHCP. Also, it doesn't
convey what the flag is used for. Rename it to
"allow_routes_without_address".
(cherry picked from commit b31febea22)
An IPv4-over-IPv6 (or vice-versa) IPsec VPN can return IP
configurations with routes and without addresses. For example, in this
scenario:
+---------------+ +---------------+
| fd01::10/64 <-- VPN --> fd02::20/64 |
| host1 | | host2 |
+-------^-------+ +-------^-------+
| |
+-------v-------+ +-------v-------+
| subnet1 | | subnet2 |
| 172.16.1.0/24 | | 172.16.2.0/24 |
+---------------+ +---------------+
host1 and host2 establish a IPv6 tunnel which encapsulates packets
between the two IPv4 subnets. Therefore, in routed mode, host1 will
need to configure a route like "172.16.2.0/24 via ipsec1" even if the
host doesn't have any IPv4 address on the VPN interface.
Accept IP configurations without address from the VPN; only check that
the address and prefix are sane if they are provided.
(cherry picked from commit 97f185e1f8)
Commit 797f3cafee ('device: fall back to saved use_tempaddr value
instead of rereading /proc') changed the behaviour of how to get the
last resort default value for ip6-privacy property.
Previously we read it from /proc/sys/net/ipv6/conf/default, buf after
this commit we started to read /proc/sys/net/ipv6/conf/<iface> instead,
because the user might have set a different value specific for that device.
As NetworkManager changes that value on connection activation, we used
the value read at the time that NetworkManager was started.
Commit 6cb14ae6a6 ('device: introduce ipv6.temp-valid-lifetime and
ipv6.temp-preferred-lifetime properties') introduced 2 new IPv6 privacy
related properties relying on the same mechanism.
However, this new behaviour is problematic because it's not predictable
nor reliable:
- NetworkManager is normally started at boot time. That means that, if a
user wants to set a new value to /proc/sys/net/ipv6/conf/<iface>,
NetworkManager is likely alread running, so the change won't take
effect.
- If NetworkManager is restarted it will read the value again, but this
value can be the one set by NetworkManager itself in the last
activation. This means that different values can be used as default in
the same system boot depending on the restarts of NetworkManager.
Moreover, this weird situation might happen:
- Connection A with ip6-privacy=2 is activated
- NetworkManager is stopped. The value in
/proc/sys/net/ipv6/conf/<iface>/use_tempaddr remains as 2.
- NetworkManager starts. It reads from /proc/sys/... and saves the value
'2' as the default.
- Connection B with no ip6-privacy setting is activated. The '2' saved
as default value is used. The connection didn't specify any value for
it, and the value '2' was set by another connection for that specific
connection only, not manually by a user that wanted '2' to be the
default.
A user shouldn't have to think on when NetworkManager starts or restarts
to known in an easy and predictable way what the default value for
certain property is. It's totally counterintuitive.
Revert back to the old behaviour of reading from
/proc/sys/net/ipv6/conf/default. Although this value is used by the
kernel only for newly created interfaces, and not for already existing
ones, it is reasonable to think on these settings as "systemwide
defaults" that the user has chosen.
Note that setting a different default in NetworkManager.conf still takes
precedence.
(cherry picked from commit 7ec363a79a)
If a connection is in-memory (i.e. has flag "unsaved"), after a
checkpoint and rollback it can be wrongly persisted to disk:
- if the connection was modified and written to disk after the
rollback, during the rollback we update it again with persist mode
"keep", which keeps it on disk;
- if the connection was deleted after the rollback, during the
rollback we add it again with persist mode "to-disk".
Instead, remember whether the connection had the "unsaved" flag set
and try to restore the previous state.
However, this is not straightforward as there are 4 different possible
states for the settings connection: persistent; in-memory only;
in-memory shadowing a persistent file; in-memory shadowing a detached
persistent file (i.e. the deletion of the connection doesn't delete
the persistent file). Handle all those cases.
Fixes: 3e09aed2a0 ('checkpoint: add create, rollback and destroy D-Bus API')
This allows SLAAC for IPv6 to be performed, even when no IPv6
address was passed by the bearer. The link-local address will be
assigned, because of do_auto = TRUE.
The commit also allows the DNS assignment to be made statically when
no IPv6 address has been statically assigned yet. This is to be able
to receive IPv6 DNS servers via signalling, where host SLAAC still
needs to be performed for some modems (e.g. some huawei modems).
This also changes the logging so that SLAAC usage is logged
on a separate line.
NMPowerMonitor emits the "shutdown" signal without arguments; fix the
definition of the signal.
Fixes: bd38a19832 ('connection: add support to down-on-poweroff')
Fix the following:
NetworkManager: file ../src/libnm-core-impl/nm-connection.c: line 321 (nm_connection_get_setting): should not be reached
NetworkManager.service: Main process exited, code=dumped, status=5/TRAP
Fixes: bd38a19832 ('connection: add support to down-on-poweroff')
Meson has shared_library and shared_module. The latter should be used
only for shared plugins loaded by dlopen, not for shared libraries
linked by the linker.
The target `nm_wwan` was defined as shared_module probably because it
is a library for loadable plugins only, andcontains references to
symbols from the main executable that cannot be resolved at link time.
Do as the deprecation message suggest and convert it to shared_library
with b_lundef=false:
DEPRECATION: target nm-device-plugin-wwan links against shared module nm-wwan, which is incorrect.
This will be an error in the future, so please use shared_library() for nm-wwan instead.
If shared_module() was used for nm-wwan because it has references to undefined symbols,
use shared_library() with `override_options: ['b_lundef=false']` instead.
The value can be unknown for different reasons:
- we don't have a value saved in NMDevice's "ip6_saved_properties"
because NM was restarted or because the device didn't have an
ifindex when it became managed.
- the value read from /proc is outside the allowed range (kernel
allows "echo 42 > /proc/sys/net/ipv6/conf/enp1s0/use_tempaddr")
Note that the second case was already possible before commit
797f3cafee ('device: fall back to saved use_tempaddr value instead
of rereading /proc').
If we can't determine the previous value, pass "unknown" to ndisc; it
will generate a l3cd with "unknown" ip6-privacy, which means to not
set the value when committing the configuration.
Fixes: 797f3cafee ('device: fall back to saved use_tempaddr value instead of rereading /proc')
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1907
While enumerating devices at startup, we take a snapshot of existing
links from platform and we start creating device instances for
them. It's possible that in the meantime, while processing netlink
events in platform_link_added(), a link gets renamed. If that happens,
then we have two different views of the same ifindex: the cached link
from `links` and the link in platform.
This can cause issues: in platform_link_added() we create the device
with the cached name; then in NMDevice's constructor(), we look up
from platform the ifindex for the given name. Because of the rename,
this lookup can match a newly created, different link.
The end result is that the ifindex from the initial snapshot doesn't
get a NMDevice and is not handled by NetworkManager.
Fix this problem by fetching the latest version of the link from
platform to make sure we have a consistent view of the state.
https://issues.redhat.com/browse/RHEL-25808https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1897
When IPv6 privacy extensions are enabled, by default temporary addresses
have a valid lifetime of 1 week and a preferred lifetime of 1 day.
That's far too long for privacy-conscious users, some of whom want a new
address once every few seconds. Add connection options that correspond
to /proc/sys/net/ipv6/conf/*/temp_valid_lft and
/proc/sys/net/ipv6/conf/*/temp_prefered_lft to allow configuring the
address rotation time on a per-connection basis.
The new properties are defined as 32-bit signed integers to match the
sysctl parameters which are also signed, although currently only
positive numbers are valid.
A common source for doubts and questions from users is about why
devices are unmanaged. Unfortunately NM doesn't expose that
information properly via D-Bus and so it's not available in nmcli.
The device D-Bus object has two properties that are strictly related:
"state" and "state-reason". The latter represents the reason for the
current state. Introduce new reasons to indicate the possible causes
for the unmanaged state. Note that a device can be unmanaged because
of multiple reasons at the same time, we only return one.
Before:
$ nmcli -f GENERAL.DEVICE,GENERAL.TYPE,GENERAL.STATE,GENERAL.reason device show
GENERAL.DEVICE: enp7s0
GENERAL.TYPE: ethernet
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 0 (No reason given)
GENERAL.DEVICE: tun0
GENERAL.TYPE: tun
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 0 (No reason given)
GENERAL.DEVICE: hwsim0
GENERAL.TYPE: unknown
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 0 (No reason given)
After:
$ nmcli -f GENERAL.DEVICE,GENERAL.TYPE,GENERAL.STATE,GENERAL.reason device show
GENERAL.DEVICE: enp7s0
GENERAL.TYPE: ethernet
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 76 (The device is unmanaged by user decision via settings plugin ("unmanaged-devices" for keyfile or "NM_CONTROLLED=no" for ifcfg-rh))
GENERAL.DEVICE: tun0
GENERAL.TYPE: tun
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 75 (The device is unmanaged by explicit user decision (e.g. 'nmcli device set $DEV managed no')
GENERAL.DEVICE: hwsim0
GENERAL.TYPE: unknown
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 69 (The device is unmanaged because the device type is unmanaged by default)
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1887
Setting for wpa_supplicant openssl_ciphers - openssl sometimes moves
ciphers among SECLEVELs. That is generaly a good thing, but some servers
are too old to support newer ciphers. Thus expert user should be allowed
to define openssl_ciphers per connection, so that they can connect to
old server, while not compromising security of other connections.
When creating VLAN over OVS internal interface which holding the same
name as its controller OVS bridge, NetworkManager will fail with error:
Error: Connection activation failed: br0.101 failed to create
resources: cannot retrieve ifindex of interface br0 (Open vSwitch
Bridge)
Expanded the `find_device_by_iface()` with additional argument
`child: NmConnection *` which will validate whether candidate is
suitable to be parent device.
In `nm_device_check_parent_connection_compatible()`, we only not allow OVS
bridge and OVS port being parent.
Resolves: https://issues.redhat.com/browse/RHEL-26753
Signed-off-by: Gris Ge <fge@redhat.com>
With `NM_CHECKPOINT_CREATE_FLAG_TRACK_INTERNAL_GLOBAL_DNS` flag set on
checkpoint creation, the checkpoint rollback will restore the
global DNS in internal configure file
`/var/lib/NetworkManager/NetworkManager-intern.conf`.
If user has set global DNS in /etc folder, this flag will not take any
effect.
Resolves: https://issues.redhat.com/browse/RHEL-23446
Signed-off-by: Gris Ge <fge@redhat.com>
Introduce a new option to NMSettingIpConfig. The new option is ternary
type being the default value set to disabled. When enabled,
NetworkManager will instruct the DHCP client to send RELEASE message
when IP addresses are being removed.
The argument might imply that when set to FALSE, the dhcp client won't
send a RELEASE message. This won't be true with the new
dhcp-send-release option that is going to be introduced.
Instead, change the name to "force_release", when set to TRUE it means
we are sending a RELEASE message even if not indicated by the user. When
set to FALSE, it will be up to the user.
The new option at NMSettingConnection allow the user to specify if the
connection needs to be down when powering off the system. This is useful
for IP address removal prior powering off. In order to accomplish that,
we listen on "Shutdown" systemd DBus signal.
The option is set to FALSE by default, it can be specified globally on
configuration file or per profile.
The code that is adding the devices to the sleeping list and taking them
down should be moved to a separated function. This way we can reuse it
and we avoid duplicating code.
In order to provide the NMSleepMonitor a more generic usage, let's
rename the whole module to NMPowerMonitor. Nothing is exposed to the API
so it is a trivial renaming.
Disable the vlan_xgress unit test which was failing.
This test is currently being work and is going to be fixed soon.
(cherry picked from commit 6e30e37ebe)
If a generic device is present and the name matches, it is compatible
with any link type.
For example, if a generic connection has a device-handler that creates
a dummy interface, the link is compatible with the NMDeviceGeneric.
When a generic connection has a custom device-handler, it always
generates a NMDeviceGeneric, even when the link that gets created is
of a type natively supported by NM. On service restart, we need to
keep track that the device is generic or otherwise a different device
type will be instantiated.
If the device-handler of the generic connection is set, the connection
is virtual and the device is created by invoking the device-handler
via NetworkManager-dispatcher service.
With this change, a generic device now represents two different device
classes:
- existing interfaces that are not natively supported or recognized
by NetworkManager. Those devices have the `has_device_handler`
property set to FALSE;
- interfaces that are created by NM by invoking the device-handler;
they have `has_device_handler` set to TRUE.
Device handlers need a way to pass data back to NetworkManager, such
as the ifindex and an error message. Allow them to return a dictionary
on standard output, where each line contains a "$key=$value" pair.
In the daemon, the dictionary is returned via the callback function.
"device-add" and "device-delete" actions are called for
device-handlers of generic devices. They differ from other actions in
the following aspects:
- only one script is invoked, the one with name specified by the
device-handler property;
- the script is searched in the "device" subdirectory;
- since there is only one script executed, the result and error
string from that script are returned by NM in the callback function.
Call the Action2() method first, and fall back to the old Action() if
the new one is not available. This allows full interoperability
between different versions of the dispatcher service and NM.
Move common code from nm_dispatcher_call_device() and
nm_dispatcher_call_device_sync() to a new function; it will also be
used in the next commits by a new variant of the function.
Set these parameters according to the values set in the new properties
sriov.eswitch-inline-mode and sriov.eswitch-encap-mode.
The number of parameters related to SR-IOV was becoming too big.
Refactor to group them in a NMPlatformSriovParams struct and pass it
around.
