Description

Create a proposal to change the expired IBC client on a chain, enabling a smooth transition to a new client without disrupting interchain communication. This proposal will test and validate the governance process required for such changes.

Steps to Implement

1. Setup Initial State:

   • Establish an IBC connection between Chain 1 and Chain 2 using an IBC client.
   • Verify initial functionality by transferring tokens or data across chains.

2. Simulate Client Expiration:

   • Allow the existing IBC client on Chain 1 to expire by advancing time or block height beyond its validity period.
   • Attempt interchain communication, which should fail due to the expired client.

3. Create and Submit a Governance Proposal:

   • Draft a governance proposal on Chain 1 to replace the expired IBC client with a new client.
   • Submit the proposal for voting, including:
     • New client parameters.
     • Justification for the change.
     • Proofs required for the client state.

4. Governance Voting:

   • Simulate the voting process to approve the proposal.
   • Confirm that the majority approves the proposal.

5. Validate the New Client:

   • After the proposal is accepted and executed, verify the new client on Chain 1 is active.
   • Resume IBC communication (e.g., token transfer or queries) to ensure the new client works as expected.

Expected Outcome

• Governance proposal successfully updates the IBC client on Chain 1 after expiration.
• Interchain communication resumes without errors using the new client.