Recently I tried upgrading our test environment from version v1.2.9 to version v1.2.16. With the same configuration on v1.2.16. The server cannot reach out to CPE devices behind NAT using STUN after updating. Reverting back to v1.2.9 corrects the issue.
Anyone know what the cause might be? The only thing I can see off hand is on v1.2.16, the connection request is going out the wrong interface, no matter what binding options I set in the env file.