Unable to execute incoming IBC transactions

[ryanchristo]

Summary of Bug

Following the upgrade to Regen Ledger v2.0, users are unable to send REGEN over IBC. Regen Mainnet is unable to execute the incoming IBC transaction. Iris Hub is experiencing the same issue and released a patch yesterday.

irisnet/irishub@v1.2.0...v1.2.1

The patch sets the params for the IBC module to the default parameters.

app.ibcKeeper.ConnectionKeeper.SetParams(ctx, ibcconnectiontypes.DefaultParams())

From the IBC migration documentation for chains upgrading to cosmos-sdk v0.44:

Chains must set a new connection parameter during either in place store migrations or genesis migration. The new parameter, max expected block time, is used to enforce packet processing delays on the receiving end of an IBC packet flow.

https://github.com/cosmos/ibc-go/blob/main/docs/migrations/ibc-migration-043.md#chain-upgrades

Version

v2.0.0

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