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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _NETINET_IGMP_H

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#define _NETINET_IGMP_H 1

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#include <sys/cdefs.h>

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#include <sys/types.h>

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#ifdef __USE_MISC

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#include <netinet/in.h>

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__BEGIN_DECLS

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* This code is derived from software contributed to Berkeley by

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* Stephen Deering of Stanford University.

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* Redistribution and use in source and binary forms, with or without

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* modification, are permitted provided that the following conditions

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* are met:

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* 1. Redistributions of source code must retain the above copyright

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* notice, this list of conditions and the following disclaimer.

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* 2. Redistributions in binary form must reproduce the above copyright

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* notice, this list of conditions and the following disclaimer in the

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* documentation and/or other materials provided with the distribution.

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* 4. Neither the name of the University nor the names of its contributors

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* may be used to endorse or promote products derived from this software

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* without specific prior written permission.

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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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* SUCH DAMAGE.

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* @(#)igmp.h 8.1 (Berkeley) 6/10/93

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* $FreeBSD$

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struct igmp {

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uint8_t igmp_type; /* IGMP type */

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uint8_t igmp_code; /* routing code */

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uint16_t igmp_cksum; /* checksum */

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struct in_addr igmp_group; /* group address */

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};

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#define IGMP_MINLEN 8

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* Message types, including version number.

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#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */

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#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */

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#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */

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#define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */

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#define IGMP_DVMRP 0x13 /* DVMRP routing message */

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#define IGMP_PIM 0x14 /* PIM routing message */

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#define IGMP_TRACE 0x15

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#define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/

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#define IGMP_MTRACE 0x1f /* mcast traceroute messages */

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#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */

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/* query (in seconds) according */

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/* to RFC1112 */

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#define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */

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/* specifies time in 10th of seconds*/

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* States for the IGMP v2 state table.

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#define IGMP_DELAYING_MEMBER 1

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#define IGMP_IDLE_MEMBER 2

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#define IGMP_LAZY_MEMBER 3

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#define IGMP_SLEEPING_MEMBER 4

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#define IGMP_AWAKENING_MEMBER 5

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* States for IGMP router version cache.

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#define IGMP_v1_ROUTER 1

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#define IGMP_v2_ROUTER 2

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* The following four defininitions are for backwards compatibility.

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* They should be removed as soon as all applications are updated to

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* use the new constant names.

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#define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY

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#define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT

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#define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT

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#define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP

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__END_DECLS

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#endif

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#endif /* netinet/igmp.h */

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