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-rw-r--r--src/vnet/ipsec/esp_encrypt.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c
index 88eda91bf7f..ff9c1e63097 100644
--- a/src/vnet/ipsec/esp_encrypt.c
+++ b/src/vnet/ipsec/esp_encrypt.c
@@ -311,7 +311,15 @@ esp_encrypt_inline (vlib_main_t * vm,
vnet_buffer (o_b0)->sw_if_index[VLIB_TX] =
vnet_buffer (i_b0)->sw_if_index[VLIB_TX];
}
- vlib_buffer_advance (i_b0, sizeof (ip4_header_t));
+
+ if (is_ip6)
+ {
+ vlib_buffer_advance (i_b0, sizeof (ip6_header_t));
+ }
+ else
+ {
+ vlib_buffer_advance (i_b0, sizeof (ip4_header_t));
+ }
}
ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG);