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-rw-r--r--src/vnet/dhcpv6/proxy_node.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/vnet/dhcpv6/proxy_node.c b/src/vnet/dhcpv6/proxy_node.c
index 40df35cd059..4dd2239ffaa 100644
--- a/src/vnet/dhcpv6/proxy_node.c
+++ b/src/vnet/dhcpv6/proxy_node.c
@@ -244,7 +244,11 @@ dhcpv6_proxy_to_server_input (vlib_main_t * vm,
/* Send to DHCPV6 server via the configured FIB */
rx_sw_if_index = sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_RX];
rx_fib_idx = im->fib_index_by_sw_if_index [rx_sw_if_index];
- server_idx = dpm->dhcp6_server_index_by_rx_fib_index[rx_fib_idx];
+
+ if (vec_len(dpm->dhcp6_server_index_by_rx_fib_index) <= rx_fib_idx)
+ goto no_server;
+
+ server_idx = dpm->dhcp6_server_index_by_rx_fib_index[rx_fib_idx];
if (PREDICT_FALSE (pool_is_free_index (dpm->dhcp6_servers,
server_idx)))