A stripped default route at Teraswitch pushed 28.83% of staked SOL offline against a 33.34% finality threshold, and almost none of the affected validators failed over.
Posted August 13, 2026 at 6:47 am EST.
Solana came close to losing the ability to finalize transactions early Wednesday, after a misconfigured internet route at a single hosting provider knocked 28.83% of staked SOL offline, according to staking solution provider Marinade. The network stops finalizing at 33.34%, which put it roughly 86% of the way to a freeze, the staking platform said.
The fault started at Teraswitch. A default route out of its Miami site was propagated across sites in Europe and the Asia-Pacific, Marinade said.
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The concentration numbers are the part worth reading twice. One autonomous system, AS20326, carries 118,890,767 SOL, more than a quarter of everything staked on the network and above the 25% ceiling the Solana Foundation’s delegation program sets, and 94% of it went dark in the same minutes, according to Marinade. Another 14.1 million SOL dropped off across latitude.sh, Limestone, Butterfly Research and Allnodes, which Marinade said it could not explain from the data.
Failover barely fired. Marinade found 59 validators holding 80.2 million SOL came back inside the same narrow window in Amsterdam, Frankfurt and Tokyo, having waited for routing to reconverge rather than switching to anything else. Helius, the second-largest validator on Solana, was down the full 33 minutes. Of 74 operators Marinade could measure, three recovered cleanly: Laine and Cogent Crypto, both run by Sol Strategies, plus Lion3d. The 90 affected validators lost 333 SOL in rewards, which validator bonds will cover at the end of the epoch.
Solana Foundation VP Tech Jacob Creech pushed back, noting that the network kept producing blocks, that 597 of 699 staked validators kept voting, that affected validators recovered within 40 minutes and that validators in the Foundation’s delegation program were unaffected, calling the outcome evidence of infrastructure diversity working. Marinade turned the analysis on itself, reporting that four autonomous systems hold two-thirds of the stake its allocation model distributes, one of them at 36.94%, and said it will review concentration limits per network and per data center and start publishing which validators run hot swap and automatic failover. The last outright Solana halt, in February 2024, took about five hours to restart.
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AI-assisted content: This article was produced with the assistance of AI tools and was reviewed, edited, and fact-checked by a member of the Unchained editorial team before publication.
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