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interfaces"
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Generate an IPv6 Link Local address for wireguard interfaces.
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T3068: Automatic generation of IPv6 link local addresses for tunnel interfaces
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We had two places were the is_ip, is_ipv4 and is_ipv6 helpers had been defined.
All places now have been converged into vyos.template as they are used both
in the Jinja2 templates and also in our scripts.
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Better implementation to assign link local addresses automatically because address only assigned to interfaces which supports IPv6 addresses.
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Tunnel interfaces hot having any IPv6 Link Local address because Linux Kernel does not assign address due to missing MAC. I have implemented a function to generate a linl local address and assign it to the interface. Link local address is required for OSPF and other protocols.
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1. Due to the previous focus on the implementation of VLAN filter, it was not considered to include MTU settings, which will lead to MTU setting errors in some cases
2. In order to make VLAN aware of the work of the bridge, it is necessary to specify the allowed VLAN ID range for the bridge itself, and forget to join it before
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Renamed using snippet below:
----------------------------
for file in $(find . -name "*.py")
do
sed -i "s/vyos_dict_search/dict_search/" $file
done
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almost every interface can be part of a bridge thus the code for changing STP
cost is best part of the Interface() base class itself.
Commit b5ef10cf ("ifconfig: T2985: support on demand bridge creation")
implemented this change but the STP file was not removed on the test devices
causing tests to pass.
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The current implementation for bridge based interfaces has an issue which is
caused by priority inheritance. We always assumed that the bridge interface will
be created last, but this may not be true in all cases, where some interfaces
will be created "on demand" - e.g. OpenVPN or late (VXLAN, GENEVE).
As we already have a bunch of verify steps in place we should not see a bridge
interface leak to the underlaying infrastructure code. This means, whenever an
interface will be member of a bridge, and the bridge does yet not exist, we will
create it in advance in the interface context, as the bridge code will be run
in the same commit but maybe sooner or later.
This will also be the solution for T2924.
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Currently the MTU size of an interface is only checked when entered via CLI but
if the interface supportes the configured MTU at all is not verified at all.
New helper functions get_min_mtu(), get_max_mtu() and verify_mtu() have been
added to provide a central API for validation.
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>>> from vyos.ifconfig import Interface
>>> tmp=Interface('eth0')
>>> tmp.get_min_mtu()
60
>>> tmp.get_max_mtu()
9000
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When removing e.g. a macsec interface and also its associated member interface
from the bridge, it will happen that the macsec interface instance is long gone
before we reach the code in the bridge interface which will remove it from the
bridge itself.
When this is the case, we can not call BridgeIf.del_port() as it will throw an
exception that the interface does not exist. We now only remove a bridge member
if the interface in question is still available in the kernel.
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A lot of derived classes from Interface implemented their own get_config()
method which more or less was the same everywhere. We also hat different
qualifiers like @staticmethod or @classmethod.
This is now changed to only have the @classmethod in Interface base class which
will return the necessary dictionary keys for the required interfaces. This
change is a mid reduction in lines of code which is always a very nice thing!
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In the past we had to provide the ethertype value used for the VLAN
protocol (0x88A8 -> 802.1ad or 0x8100 -> 802.1q).
This should be changed to a more user friendly CLI node (protocol over
ethertype) and 802.1ad over it's raw value 0x88A8. There is no need in
presenting RAW information from the ethernet header to the user. Also iproute2
calls it protocol which makes way more sense over the "raw" value.
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hostapd/wpa_supplicant will control the admin state of an interface, thus we
should re-add it to a bridge after we have launched those services.
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Instead of using an Adapter pattern to make interfaces VLAN-aware, create a
derived class named VLANIf to represent a VLAN. This change was necessary to
eliminate mixed code in Interfaces class which was VLAN - free, but recently
gained some VLAN specific code for set_admin_state().
In addition this "autoresolves" the issue in T2894 as a bond vlan interface
will no longer change the lower interface.
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Removing a member from a bond/LACP will turn the physical interface always in
admin-down state. This is invalid, the interface should be placed into the state
configured on the VyOS CLI.
Smoketest on bond interfaces is extended to check this behavior.
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Specifies the minimum number of links that must be active before asserting
carrier. It is similar to the Cisco EtherChannel min-links feature. This allows
setting the minimum number of member ports that must be up (link-up state)
before marking the bond device as up (carrier on). This is useful for situations
where higher level services such as clustering want to ensure a minimum number
of low bandwidth links are active before switchover.
This option only affects 802.3ad mode.
The default value is 0. This will cause carrier to be asserted (for 802.3ad
mode) whenever there is an active aggregator, regardless of the number of
available links in that aggregator. Note that, because an aggregator cannot be
active without at least one available link, setting this option to 0 or to 1
has the exact same effect.
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With VyOS 1.2 the default WireGuard behavior is used. This means that when a
WireGuard interface is added to the system, there is no "MAC" address - also
there is no IPv6 link-local address assigned by the Kernel to this particular
interface.
With implementation of T2653 all interfaces now receive an IPv6 address - which
is also valid for WireGuard interfaces - unfortunately this logic relies on the
interface MAC address - and as there is none, the link-local address will be
always the same. The logic behind is coded here [1].
We generate an IPv6 link-local address even when there is no "MAC" address. The
behavior/functionality (as with VyOS 1.2) must be restored to not have a
link-local IPv6 address at all. Any user can add any IPv6 link-local address
manually by issuing: set interfaces wireguard wg01 address fe80::ff:1/64.
Change vyos.ifconfig.add_ipv6_eui64_address to only add the EUI64-based
link-local address if a MAC address is available.
[1] https://github.com/vyos/vyos-1x/blob/3077158391ceee4ce04c27dec33f629529727c36/python/vyos/ifconfig/interface.py#L468
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Now that b40c52682a256 ("config: T2636: get_config_dict() returns a list on
multi node by default") is implemented the workarounds can be removed.
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This reverts commit 5a5974d5a00b482cabd3dee92bc365d3c9f399bc.
Required for operational mode "show interfaces" command.
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Currently DHCPv6-PD requires an interface address configured to dhcpv6 on the
CLI. This is not required also sometimes there is either no dhcpv6 interface
addressing available (PPPoE) or wanted. This limitation was artificial due to
the old interface code.
Change the implementation to spawn the DHCPv6 client and request a prefix even
when there is no address request configured.
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DHCP service was not stopped when an DHCP address got removed from the
interface. DHCP service is now always stopped if it is not configured
explicitly.
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Commit 21bc98f1 ("ifconfig: dhcp: T2767: client must not start when interface
is disabled") dropped the vyos.ifconfig.dhcp module but not removed it
from the modules import list.
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ISC DHCP client will always place an Interface in admin-up state once it is
started. We must ensure that if an interface is placed in A/D state that the
DHCP client proccess is not launched and terminated if it is running.
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We must ignore any return code when invoking dhcpc6 initially. This is required
to enable DHCPv6-PD for interfaces which are yet not up and running and my be
started later by VyOS.
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Pass the interface dictionary transparently to the DHCP module and render the
DHCP client config template directly from the same source instead of transcoding
it once more.
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This removes additional code paths as we can instatly work with the input dict
the same was as it was done for PPPoE. This fixes the entire DHCPv6-PD support
on non PPPoE interfaces as this was lost in translation while processing T2653.
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Commit 29dd5079 ("ifconfig: T2653: remove duplicated code for address flush")
used the class method for address flushing, but it was cvalled in the wrong way.
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After the fresh rewrite of the interfaces to a unified solution (T2653) IPv6
link-local addresses are no longer added. This will result in e.g. broken RAs.
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The current VyOS CLI parser code written in Python contains a ton of duplicates
which I can also hold myself accountable for - or maybe mainly me - depends on
the angle of judge.
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The current VyOS CLI parser code written in Python contains a ton of duplicates
which I can also hold myself accountable for - or maybe mainly me - depends on
the angle of judge.
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... as it is only used inside the interface class.
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