Detect old-style multicast routers and interoperate properly
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=4028
@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* @(#)igmp.c 8.1 (Berkeley) 7/19/93
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* $Id: igmp.c,v 1.4 1994/09/06 22:42:16 wollman Exp $
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* $Id: igmp.c,v 1.5 1994/09/14 03:10:07 wollman Exp $
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*/
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/*
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@ -215,6 +215,13 @@ igmp_input(m, iphlen)
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break;
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if (igmp->igmp_code == 0) {
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rti->type = IGMP_OLD_ROUTER; rti->time = 0;
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/*
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** Do exactly as RFC 1112 says
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*/
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if (ip->ip_dst.s_addr != igmp_all_hosts_group) {
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++igmpstat.igps_rcv_badqueries;
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m_freem(m);
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