Legacy slaves can't understand new enum version values

[Host Controller] 10:53:50,342 ERROR [org.jboss.as.controller.management-operation] (Host Controller Service Threads - 2) WFLYCTL0013: Operation ("add") failed - address: ([("host-exclude" => "EAP70")]) - failure description: "WFLYCTL0248: Invalid value EAP7.0 for host-release; legal values are [EAP6.3, EAP6.2, WildFly10.0, EAP6.4]"
[Host Controller] 10:53:50,366 ERROR [org.jboss.as.host.controller] (Host Controller Service Threads - 2) WFLYHC0143: Failed to apply domain-wide configuration from master host controller. Operation outcome: failed. Failure description {"WFLYCTL0062: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-1" => "WFLYCTL0248: Invalid value EAP7.0 for host-release; legal values are [EAP6.3, EAP6.2, WildFly10.0, EAP6.4]"}}
[Host Controller] 10:53:50,448 WARN [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0001: Could not connect to remote domain controller remote://192.168.122.71:9999 – 1-$-
[Host Controller] 10:53:50,449 WARN [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0147: No domain controller discovery options remain.
[Host Controller] 10:53:50,451 ERROR [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0002: Could not connect to master. Aborting. Error was: java.lang.IllegalStateException: WFLYHC0120: Tried all domain controller discovery option(s) but unable to connect