February 17, 2026 10:00AM - 12:00PM PST
February 17, 2026 6:00PM - 8:00PM UTC
Core IPv6 Network, Core IPv4 Network, DNS, Mail Relays, FTP Mirrors, Internal Monitoring
Chicago, IL, Madison, WI, New York, NY, Corvallis, OR, Salem, OR
As part of our ongoing migration to the State Data Center, the Oregon State University Open Source Lab (OSUOSL) will be performing critical network maintenance on Tuesday, February 17.
Maintenance Window
Start: Tuesday, Feb 17, 10:00 AM PST
End: Tuesday, Feb 17, 12:00 PM PST
This maintenance involves moving the default gateways for specific subnets from the Corvallis router to our new router at the State Data Center (SDC).
Currently, traffic for many hosts physically residing in the SDC still routes back through our Corvallis datacenter. This creates a single point of failure, as the Corvallis facility is currently experiencing UPS reliability issues. By migrating these gateways to the SDC router, we eliminate this dependency on the Corvallis power infrastructure and significantly improve the stability and redundancy of our network. We are working as quickly as possible to complete these moves to safeguard your hosted services.
Impact
Gateways will be migrated one by one. You should expect a brief period of network unreachability (typically a few minutes) for each subnet as the cutover occurs.
Please note: This maintenance only covers the subnets listed below. Additional subnets will be moved at a later date which has yet to be scheduled.
Affected Subnets
The following subnets and their associated IPv4/IPv6 ranges will be migrated during this window:
General Servers 1: 140.211.166.0/25 | 2605:bc80:3010:101::/64
General Servers 2: 140.211.167.128/25 | 2605:bc80:3010:102::/64
General Servers 3: 140.211.15.0/24 | 2605:bc80:3010:103::/64
General Servers 4: 140.211.9.0/24 | 2605:bc80:3010:104::/64
OSL OpenStack 1: 140.211.167.0/27 | 2605:bc80:3010:501::/64
OSL OpenStack 2: 140.211.166.224/27 | 2605:bc80:3010:502::/64
OSL OpenStack 3: 140.211.169.128/26 | 2605:bc80:3010:503::/64
OSL OpenStack 4: 140.211.167.64/27 | 2605:bc80:3010:504::/64
OSL OpenStack 5: 140.211.169.0/26 | 2605:bc80:3010:505::/64
OSL OpenStack 6: 140.211.10.64/26 | 2605:bc80:3010:506::/64
OSL OpenStack 7: 140.211.11.0/24 | 2605:bc80:3010:507::/64
OSL Services: 140.211.166.128/28 | 2605:bc80:3010::/64
OSL Internal: 140.211.166.144/28 | 2605:bc80:3010:1::/64
OSL Protected: 140.211.167.120/29 | 2605:bc80:3010:2::/64
IPv6 SLAAC Enabling
Along with the router migration, we will be enabling SLAAC (Stateless Address Autoconfiguration) on all of the subnets listed above. Hosts on these networks will automatically be assigned an IPv6 address. Please ensure your local firewall configurations (e.g., ip6tables, nftables) are updated if you wish to manage traffic for these auto-assigned addresses.
For more information on our migration progress and how you can support our efforts, please see our latest blog post.
If you have any questions or experience prolonged connectivity issues after the maintenance window, please reach out to us at support@osuosl.org.
