Sepolia has had some peering troubles in the past, It seems like the old
EF bootnodes weren't created properly or not added to the IaC stack we
usually have our configs in, so I went ahead and setup new bootnodes on
DigitalOcean. These have more liberal bandwidth limits and cost far
lesser to run, they should be able to help with peering and sync
performance on Sepolia.
The bootnode configs have been commited to the private devops repo along
with a reserved IP and the nodekey has been backed up. The bootnode has
additionally been added to the DevOps monitoring and updating stack. We
should be able to maintain these bootnodes far better in the future.
This PR contains very small EIP-4844 additions. GasPool is modified and
now it is a struct with 2 fields "gas" and "dataGas" (blobs are priced
in dataGas). ExcessDataGas block header field added. ExcessDataGas
needed to compute the data gas price. EIP-4844 helper functions are
added as well.
Embedded CL is not supported for Gnosis Chain, so it makes sense to set
`externalcl` to true by default for it.
Also, this PR sets `terminalTotalDifficultyPassed` for Gnosis Chain &
Chiado (see https://docs.gnosischain.com/updates/20221210-merge).
This PR includes changes required for delhi hard fork schedule at block
`29638656` on mumbai testnet. It changes few major parameters.
1. Sprint length - the number of bor blocks post which a new validator
mines has been reduced from 64 to 16.
2. Block time - the block time which was increased earlier for some
experiments to 5 seconds has been reduced to 2 seconds (along with
backup multiplier and producer delay).
3. Base fee denominator - this fields has been increased from 8 to 16 to
smoothen the effect of EIP 1559.
