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- /* $Id$ */
- /*
- * Copyright (c) 2001-2010 Aaron Turner <aturner at synfin dot net>
- * Copyright (c) 2013-2024 Fred Klassen <tcpreplay at appneta dot com> - AppNeta
- *
- * The Tcpreplay Suite of tools is free software: you can redistribute it
- * and/or modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or with the authors permission any later version.
- *
- * The Tcpreplay Suite is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with the Tcpreplay Suite. If not, see <http://www.gnu.org/licenses/>.
- */
- #include "ethernet.h"
- #include <assert.h>
- #include <string.h>
- /*
- * Takes a ptr to an ethernet address and returns
- * 1 if it is unicast or 0 if it is multicast or
- * broadcast. As per RFC7042.
- */
- int
- is_unicast_ethernet(tcpeditdlt_t *ctx, const u_char *ether)
- {
- assert(ctx);
- assert(ether);
- /* ff:ff:ff:ff:ff:ff - broadcast */
- if (memcmp(ether, BROADCAST_MAC, ETHER_ADDR_LEN) == 0)
- return 0;
- /* 01:00:5e:(00:00:00-7f:ff:ff) - IPv4 Multicast and MLPS Multicast */
- if (memcmp(ðer[0], IPV4_MULTICAST_MAC, 3) == 0)
- return 0;
- /* 33:33 - IPv6 Multicast */
- if (memcmp(ðer[0], IPV6_MULTICAST_MAC, 2) == 0)
- return 0;
- /*
- * 00:00:5e:(00:01:00 – 00:01:ff) - IPv4 Virtual Router Redundancy Protocol
- * 00:00:5e:(00:02:00 – 00:02:ff) - IPv6 Virtual Router Redundancy Protocol
- */
- if (memcmp(ðer[0], IPV4_VRRP, 5) == 0 || memcmp(ðer[0], IPV6_VRRP, 5) == 0)
- return 0;
- /* everything else is unicast */
- return 1;
- }
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