Reth Releases v2.11.0 With Strict RPC Caps and evm2 Block Execution

Ethereum execution client Reth published release notes for version 2.11.0 on Nov. 11, introducing hard limits on resource-heavy RPC queries, removing several obsolete configuration flags, and shifting Ethereum block execution to evm2::block ¹. The release marks a "high" update priority for both payload-building and non-payload-building node operators ¹.

Under the new release, RPC methods prone to unbound computational workloads face strict operational limits ¹. Calls to eth_callMany, trace_callMany, and debug_traceCallMany are now capped at a maximum of 1,024 calls per request, operate under a shared --rpc.gascap budget, and terminate if subsequent calls begin more than five seconds after the initial one ¹. Additionally, eth_getProof enforces a ceiling of 1,024 storage keys, while eth_getMultiProof limits requests to 1,024 targets and 1,024 total keys ¹. Operators using simulation endpoints also see changes: mev_simBundle compute is bounded, and eth_simulateV1 now halts when requests drop and assesses cancellation once per simulated block ¹.

CLI Breaking Changes and SDK Refactor

The update enforces breaking operational changes on startup configurations ¹. Nodes will refuse to start if legacy no-op flags—such as --engine.legacy-state-root, --engine.caching-and-prewarming, and --engine.parallel-sparse-trie—remain in configuration files ¹. Unix IPC socket permissions are now validated prior to binding, causing startup failures on platforms that cannot pre-set modes, including macOS ¹. When using --instance N without a specified socket path, the Engine API IPC socket defaults to /tmp/reth_engine_api.ipc-N, requiring operators whose consensus clients rely on previous paths to define --auth-ipc.path ¹.

For developers integrating the Reth SDK, the release migrates Ethereum block execution into evm2::block, turning Reth's internal executors into thin wrappers around evm2 types ¹. The update follows previous infrastructure hardening cycles, such as the Reth 2.10.0 release, and implements performance updates including parallelized EIP-7702 authorization recovery and replacing schnellru caches with reth-lru ¹.