17 lines
731 B
Diff
17 lines
731 B
Diff
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diff -up dhcp-4.3.1/common/lpf.c.vlan dhcp-4.3.1/common/lpf.c
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--- dhcp-4.3.1/common/lpf.c.vlan 2014-10-08 19:06:17.963118201 +0200
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+++ dhcp-4.3.1/common/lpf.c 2014-10-08 19:07:17.086276536 +0200
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@@ -543,6 +543,12 @@ ssize_t receive_packet (interface, buf,
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if (cmsg->cmsg_level == SOL_PACKET &&
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cmsg->cmsg_type == PACKET_AUXDATA) {
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struct tpacket_auxdata *aux = (void *)CMSG_DATA(cmsg);
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+ /* if listening on plain interface we can see vlan traffic as well.
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+ skip vlan traffic if tagged. If we are listening on vlan interfaces
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+ as well we will see the traffic again but without the tag
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+ */
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+ if (aux->tp_vlan_tci != 0)
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+ return 0;
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nocsum = aux->tp_status & TP_STATUS_CSUMNOTREADY;
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}
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}
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