if (PREDICT_FALSE (!sa0->is_tunnel && !sa0->is_tunnel_ip6))
{
tunnel_mode = 0;
- ih4 =
- (ip4_header_t *) (i_b0->data +
- sizeof (ethernet_header_t));
+
+ if (i_b0->flags & VNET_BUFFER_F_IS_IP4)
+ ih4 =
+ (ip4_header_t *) ((u8 *) esp0 - sizeof (ip4_header_t));
+ else
+ ih4 =
+ (ip4_header_t *) ((u8 *) esp0 - sizeof (ip6_header_t));
+
if (PREDICT_TRUE
((ih4->ip_version_and_header_length & 0xF0) != 0x40))
{
{
transport_ip6 = 1;
ip_hdr_size = sizeof (ip6_header_t);
- ih6 =
- (ip6_header_t *) (i_b0->data +
- sizeof (ethernet_header_t));
+ ih6 = (ip6_header_t *) ih4;
oh6 = vlib_buffer_get_current (o_b0);
}
else