Fix sending of ARP packets.

diff --git a/bpf.c b/bpf.c
index f015344ba05fdfe6a92231761dc39a0a2d8dc60f..e37b5073282aaf330fab24104a4d366e14ea51a7 100644 (file)
--- a/bpf.c
+++ b/bpf.c
@@ -142,6 +142,7 @@ send_raw_packet(const struct interface *iface, int protocol,
 {
        struct iovec iov[2];
        struct ether_header hw;
+       int fd;
 
        memset(&hw, 0, ETHER_HDR_LEN);
        memset(&hw.ether_dhost, 0xff, ETHER_ADDR_LEN);
@@ -150,7 +151,13 @@ send_raw_packet(const struct interface *iface, int protocol,
        iov[0].iov_len = ETHER_HDR_LEN;
        iov[1].iov_base = UNCONST(data);
        iov[1].iov_len = len;
-       return writev(iface->fd, iov, 2);
+#ifdef ENABLE_ARP
+       if (protocol == ETHERTYPE_ARP)
+               fd = iface->arp_fd;
+       else
+#endif
+               fd = iface->fd;
+       return writev(fd, iov, 2);
 }
 
 /* BPF requires that we read the entire buffer.