Meeting Summary:
This was ACDT meeting number 87 focused on the status of Glamsterdam DevNet 6 and DevNet 7 deployment. Stefan reported that DevNet 6 had good overall participation at 80+ percent, with minor issues including some nodes having trouble recovering from forks, particularly Lodestar and Nimbus EL, though most issues were already resolved. The team discussed the upcoming DevNet 7 launch, with plans to use a gas limit of 300 million after feedback from clients, and Stefan announced plans to launch with 500,000 exited validators and manually deploy the 8282 contract. The EL breakout session covered an important update to AD37 that addressed a block sizing issue where blocks could be eight times larger than expected, which had been merged into release 7.2. Maria raised questions about potential naming clarifications in the EIPs, particularly around gas terminology and log costs, which the team agreed would be beneficial to implement in DevNet 8 to improve clarity without changing consensus mechanisms.
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The meeting began with participants joining and informal greetings. Mario opened ACDT number 87 on July 13, 2026, with a light agenda focusing on Glamsterdab, DevNet 6, and DevNet 7 deployment. The meeting was in its early stages, with participants discussing technical questions about block queuing and the current status of DevNet 6 on Ethereum R&D Discord, though the full discussion was not captured in the transcript.
The team discussed the status of Glasgow DevNet 6, where Stefan reported overall good participation at 80%+ with minor issues including some nodes having recovery problems after forks. The discussion then moved to DevNet 7 releases, with clients reporting varying progress on alpha 12 tests. Most clients including Nethermind, Geth, and EtherX were passing tests, while some like Bezu and Aragon needed to provide updates on their test progress. The team noted that while some clients were still working on passing all tests, most were reasonably close to completion.
Stefan reported on his local testing of DevNet7, identifying several issues including peer scoring with Prism and P2P problems with Nimbus, but confirmed the network is close to launching. The team agreed to increase the gas limit to 300 million for the launch, with Stefan planning to deploy with half a million exited validators, 1024 ETH validator balance, and withdrawal credentials of 0x02. The conversation ended with discussions about transitioning to separate calls for Ethereum Layer (EL) and Client (CL) breakouts regarding the Glamsterdam upgrade mascot decision.
The team discussed an update to EIP-11908 found by Jochem, which addresses a bug where data floor accounting was only done at the transaction level instead of the block level, allowing blocks to be eight times larger than expected. The update has already been merged into the specifications and included in release 7.2, with additional tests added to ensure compatibility. The group confirmed this is a breaking change that requires client implementations to be updated, and there were no objections to including it in DevNet 7.
The team discussed including floor gas in regular gas for the block and clarified that the issue was about assumptions not holding rather than a true denial of service. Maria proposed making small tweaks to EIPs 8037/8038/2780, including renaming “regular GAS” to “execution GAS” and simplifying log cost calculations, which the team agreed was desirable as long as it didn’t introduce consensus-breaking changes. Maria will make these clean-up changes to the EIPs next week and share them with the team.
Next Steps:
- Stefan: Launch DevNet 7 with a gas limit of 300 million, half a million exited validators, and manually deploy the 8282 contract.
- Daniel: Push changes to the Bezu branch and try it in Kurtosis.
- Dragan: Review changes and propagate them for Reth, aiming to have a branch ready by tomorrow morning.
- Stefan: Look into the Lodestar Aragon node issue.
- Stefan: Look in more detail at the Nimbus EL test passing situation.
- Maria: Make edits to the EIPs for clarity (e.g., renaming “regular GAS” to “execution GAS”, adjusting log cost in 2780) and share the PRs, aiming for next week.
- Clients (EL and CL): Review and implement the spec change from Jochem’s PR (merged in 7.2) regarding data floor accounting at the block level.
- Clients (CL): Provide updates on the SEAL test passing status for DevNet 7.
Recording Access: