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-rw-r--r--vnet/vnet/cdp/cdp_periodic.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/vnet/vnet/cdp/cdp_periodic.c b/vnet/vnet/cdp/cdp_periodic.c
index ede9095fda4..dc631b35876 100644
--- a/vnet/vnet/cdp/cdp_periodic.c
+++ b/vnet/vnet/cdp/cdp_periodic.c
@@ -140,6 +140,9 @@ send_ethernet_hello (cdp_main_t *cm, cdp_neighbor_t *n, int count)
b0->current_length = nbytes_to_checksum + sizeof (*h0)
- sizeof (cdp_hdr_t) ;
+ /* And the outbound interface */
+ vnet_buffer(b0)->sw_if_index[VLIB_TX] = hw->sw_if_index;
+
/* Set the 802.3 ethernet length */
h0->ethernet.len = htons (b0->current_length
- sizeof (ethernet_802_3_header_t));