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-rw-r--r--src/plugins/ikev2/ikev2.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/plugins/ikev2/ikev2.c b/src/plugins/ikev2/ikev2.c
index 17d2347baad..47b2e9e9ac1 100644
--- a/src/plugins/ikev2/ikev2.c
+++ b/src/plugins/ikev2/ikev2.c
@@ -2817,7 +2817,13 @@ ikev2_node_internal (vlib_main_t * vm,
int ip_hdr_sz = 0;
int is_req = 0, has_non_esp_marker = 0;
- if (b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0])
+ ASSERT (0 == b0->punt_reason
+ || (is_ip4
+ && b0->punt_reason ==
+ ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0]));
+
+ if (is_ip4
+ && b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0])
{
u8 *ptr = vlib_buffer_get_current (b0);
ip40 = (ip4_header_t *) ptr;