BIND is open source software licensed under the terms of the Mozilla Public License, version 2.0 (see the LICENSE file for the full text). The license requires that if you make changes to BIND and distribute them outside your organization, those changes must be published under the same license. It does not require that you publish or disclose anything other than the changes you have made to our software. This requirement does not affect anyone who is using BIND, with or without modifications, without redistributing it, nor anyone redistributing BIND without changes. Those wishing to discuss license compliance may contact ISC at https://www.isc.org/mission/contact/.