Issues with requesting a certificate with Lego (Acme)

[fly-man-]

When requesting a certificate with the latest version of the Lego ACME client, the server spits out this message when requesting it with TLS

boulder-1 | 2026-05-21T23:18:52.164453+00:00Z boulder-va[325]: 6 boulder-va 887wmAg [AUDIT] Validation result JSON={"AuthzID":"104","Requester":23,"Identifier":{"type":"dns","value":"MYDOMAIN>"},"Challenge":{"type":"tls-alpn-01","status":"invalid","error":{"type":"connection","detail":"Error getting validation data","status":400},"token":"t4MGmGNVtBcyWhRzHLjhyOF5rJTgohVatXCByxZ6K3c","validationRecord":[{"hostname":"MYDOMAIN","port":"443","addressesResolved":["10.10.0.211"],"addressUsed":"10.10.0.211","resolverAddrs":["A:DNS:53","AAAA:DNS:53"]}]},"Error":"connection :: Error getting validation data","InternalError":"IP address is in a reserved address block: [RFC1918]: Private-Use","Latency":0.006}

Is this a value I need to adjust somewhere or does this need to be implemented still ?