Changes in Release 26.08

New Functionality 

Minor improvements

Arista EOS:

[Transparent Management containerlab feature] has been enabled for Cisco ASAv, Cisco Catalyst 8000v, Cisco CSR 1000v, Cisco Nexus OS, Nokia SR-OS (the vrnetlab VM version, not SR-SIM), vJunos router, vJunos switch, vJunos Evolved (vPTX), and Juniper vSRX.

Arista EOS:

We enabled the Transparent Management containerlab feature on vrnetlab-based devices supporting it in July 2026. This change should not impact older containers, but will change the management IPv4 address on virtual machines running within some newly-built containers from 10.0.0.15 (default management IPv4 address) to the outside (container) management IPv4 address.
We switched to sudo-less containerlab operation. If your containerlab-based labs fail to start, check whether your username is in the clab_admins group with the groups command. To add your username to that group, use:

sudo usermod -aG clab_admins $USER
newgrp clab_admins