/usr/include/dns/edns.h is in libbind-dev 1:9.11.3+dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | /*
* Copyright (C) 2014-2016 Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef DNS_EDNS_H
#define DNS_EDNS_H 1
/*%
* The maximum version on EDNS supported by this build.
*/
#define DNS_EDNS_VERSION 0
#ifdef DRAFT_ANDREWS_EDNS1
#undef DNS_EDNS_VERSION
/*
* Warning: this currently disables sending COOKIE requests in resolver.c
*/
#define DNS_EDNS_VERSION 1 /* draft-andrews-edns1 */
#endif
#endif
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