This upgrade fixes a bug in the v5.0.0 upgrade's app.go, which prevents new IBC channels from being created. All existing IBC channels are believed to be fine.
This binary is compatible with v5.0.0 until block height 2464000, estimated to be at 4PM UTC Monday December 20th. All nodes must upgrade to this binary prior to that height. This upgrade is intended to be voted in by on-chain governance, but to otherwise be used in place of v5.0.0 at all times.
Testing methodology
This upgrade has been tested to be compatible with v5.0.0 until the upgrade height on a testnet. This was done by having a v6.0.0 validator and a v5.0.0 full node peered to each other. Prior to upgrade height, both would reject channel open txs. Past upgrade height, the validator would accept channel opens, and the v5.0.0 full node would crash with a conflicting state hash (as expected). The v6.0.0 node could then receive IBC sends/receives.
Changelog lines
- Patch - Revert back to passing in the correct staking keeper into the IBC keeper constructor.
- Height gating change - Height gate the change in IBC, to make the v6.0.0 binary compatible until upgrade height.