# Changes in Release 26.07

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.. contents:: Table of Contents
   :depth: 2
   :local:
```

(release-26.07)=
## New Functionality

* The [**multiserver** plugin](plugin-multiserver) distributes containerlab devices across multiple servers.
* The [**GRE tunnel** plugin](plugin-tunnel-gre) supports GRE tunnels on Cisco IOS, FRR, VyOS, and Junos (vSRX and vJunos-router).
* The [**WireGuard tunnel** plugin](plugin-tunnel-wireguard) supports WireGuard tunnels on FRR.
* The [**bgp.session** plugin](plugin-bgp-session) and the [OSPF module](module-ospf) support graceful restart on Arista EOS, BIRD, FortiOS, and FRR
* The [**bgp.policy** plugin](plugin-bgp-policy) supports the **bgp.role** attribute on FRR and BIRD.

**Minor changes and improvements**

* The **[netlab status](netlab-status)** command displays IPv6 management addresses.
* Validation plugins can check BFD state in BGP neighbor details, use platform-independent parameters, and mark expected failures.
* Configuration templates can use directories in the `package:extra` template search path.
* Filter static route node next hops by link name

(release-26.07-device-features)=
## New Device Features

Arista EOS:
* BGP graceful restart

BIRD:
* BGP confederations
* VXLAN data plane and EVPN MAC VRFs
* Anycast gateways
* Indirect static routes
* VRFs, including BGP, OSPF, static routing, and route leaking
* OSPF default route origination, graceful restart, and BFD
* Unify BIRD Dockerfile variants. The BIRD container version you [want to build](build-bird) is now selected with the **[netlab clab build](netlab-clab-build)** `--version` parameter

FortiOS:
* BGP
* OSPF route import, default route origination, and graceful restart

FRR:
* BGP and OSPF graceful restart
* GRE and WireGuard tunnels

Junos:
* GRE tunnels on vSRX and vJunos-router

Mikrotik RouterOS7:
* New BGP configuration templates work with recent software releases (tested with release 7.21.4)
* BFD for OSPF
* BGP per-address-family activation
* VXLAN, including IPv6 VTEPs

OpenBSD:
* VLANs

Nokia SR Linux:
* Inter-VRF route leaking

Nokia SR OS/SR SIM:
* Use correct interface names in BFD configuration templates

VyOS:
* GRE tunnels

(release-26.07-device-fixes)=
## Fixes in Configuration Templates

Aruba CX:
* Configure VRF BGP session parameters

BIRD:
* Configure IBGP sessions with the BGP source interface
* Correct VRF static route configuration
* Use Debian Trixie as the base image for BIRD containers
* Install procps in BIRD containers
* Start the BIRD daemon after the data-plane configuration creates the required interfaces

Cisco IOL L2:
* BFD does not work with OSPFv3

Dell OS10:
* Reject topologies with tagged VLAN 1

Extreme EXOS:
* Reject topologies with tagged VLAN 1

FRR:
* Write device logs to `/var/log/frr` and include a configurable **frr.logfile** attribute
* Mirror file logging to container `stdout` when doing debugging
* Unify Linux interface sysctl settings across uplinks, VLAN, and tunnel interfaces

Mikrotik RouterOS7:
* Block untagged frames on trunks without a native VLAN
* Support native routed VLANs and prevent invalid tagged VLAN 1 configuration

Nokia SR Linux:
* Reject topologies that use more than one MPLS/VPN route target

OpenBSD:
* Use node/group variables for OpenBSD username/password

VyOS:
* Configure EVPN L3VNI and BFD profiles correctly

(release-26.07-breaking)=
## Breaking changes

* The VirtualBox provider has been removed.
* BIRD v3 is now the default BIRD version. Specify an older version explicitly if needed.
* Mikrotik RouterOS BGP templates use the current BGP configuration syntax. Use a recent RouterOS release; 7.21.4 was used in our tests.

(bug-fixes-26.07)=
## Bug Fixes

* FortiOS configuration collection works with current FortiOS releases returning HTTP 405, and configuration deployment falls back to the CLI only after rejected API commands (#3465, #3466)
* `netlab initial` no longer fails when a device log file is absent (#3471)
* The anycast validation plugin handles devices without a `gateway.protocol` attribute (#3474)
* vMX SSH readiness uses an appropriate timeout (#3483, #3486)
* `netlab status` generates correct IPv6 tool URLs (#3550)
* Ping validation uses the complete packet length, and BGP neighbor validation correctly handles address-family activation (#3579, #3580, #3591)
* Fix: Ensure the VRF BGP data always has 'neighbors' list (#3614)
* Fix missing 'f' for Python f-strings (#3598)
* Generic 'include module/plugin config into initial config' framework (#3593)
* Add BFD checks to bgp_neighbor_details validation plugin (#3534)
* Fix bgp_neighbor validation plugin implementations (#3580)
* Add '_expect_fail' parameter to validation tests (#3578)
* Convert built-in plugins to module names (#3575)
* Standardize tested device names in integration tests (#3536)
* 'Get node interface' utility functions
* Use correct literal IPv6 addrs in tool URLs (#3550)
* When needed, add static default routes when originating BGP default routes (#3527)
* Speed up static routing tests with small OSPF timers
* _remove_when_false: remove dicts with False values (#3517)
* Support per-module dataplane script and control-plane config for daemons (#3512)
* Check returned STDERR and STDOUT in validation tests (#3502)
* Refactor clab provider into multiple files (#3473)
* Do not try to extract warnings without a log file (#3471)
* Simplify main 'lab_commands' function (#3464)
* Check device support for bgp.remove_private_as values (#3463)

(doc-fixes-26.07)=
## Documentation Fixes

* Documented how to increase **netlab initial** wait times (#3619)
* Updated the BFD-for-BGP support table (#3620)
* Improved command descriptions in the README (#3493)
* Reorganized plugin manual-page documentation and clarified multiserver plugin tables
* Split and cleaned up data-type validation documentation (#3516)