# netlab 25.12: Cisco IOS/XR Configuration Modules, More VXLAN Goodies

DevFeed: [netlab 25.12: Cisco IOS/XR Configuration Modules, More VXLAN Goodies](<https://devfeed.tech/articles/netlab-25-12-cisco-ios-xr-configuration-modules-more-vxlan-goodies-11297.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2025/12/netlab-25-12/>)

Published: 2025-12-08T06:16:00Z

Content type: release

Language: en

Sources: [ipSpace.net blog](<https://devfeed.tech/sources/ipspace-net-blog.md>)

Topics: [networking](<https://devfeed.tech/topics/networking.md>), [Cisco](<https://devfeed.tech/topics/cisco.md>), [releases](<https://devfeed.tech/topics/releases.md>), [BGP](<https://devfeed.tech/topics/bgp.md>), [Release notes](<https://devfeed.tech/topics/release-notes.md>), [VXLAN](<https://devfeed.tech/topics/vxlan.md>), [configuration](<https://devfeed.tech/topics/configuration.md>)

Tags: [bgp](<https://devfeed.tech/tags/bgp.md>), [bugs](<https://devfeed.tech/tags/bugs.md>), [cisco](<https://devfeed.tech/tags/cisco.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [ipv6](<https://devfeed.tech/tags/ipv6.md>), [netlab](<https://devfeed.tech/tags/netlab.md>), [ospf](<https://devfeed.tech/tags/ospf.md>), [release](<https://devfeed.tech/tags/release.md>), [release-notes](<https://devfeed.tech/tags/release-notes.md>), [replication](<https://devfeed.tech/tags/replication.md>), [routing](<https://devfeed.tech/tags/routing.md>), [validation](<https://devfeed.tech/tags/validation.md>), [vxlan](<https://devfeed.tech/tags/vxlan.md>)

## AI overview

The netlab 25.12 release improves Cisco IOS/XR configuration support and adds VXLAN-over-IPv6 on Arista EOS, VXLAN ingress replication on Cisco Catalyst 8000v, larger BGP community lists, and changes to validation test handling.

## Source excerpt

netlab release 25.12 (25.12.02 to be exact - I had a few PEBCAK moments) was published last Friday. Here are the highlights: Significantly improved Cisco IOS/XR support. With the netlab release 25.12, you can configure VLANs, VRFs, static routes, route redistribution, OSPF default routes, BGP confederations, and BGP local-as VXLAN-over-IPv6 on Arista EOS VXLAN with ingress replication on Cisco Catalyst 8000v The shutdown link/interface attribute can be used to start labs with interfaces turned off Large BGP community lists, implemented on Arista EOS, FRR, and Junos. You can use standard- or large community lists in routing policies The netlab validate command will reread validation tests from a modified lab topology file every time you run it. It can also read validation tests from a separate file. Read more ...