vlib_buffer_advance (b0, sizeof (*ip60));
ip_set (&src0, &ip60->src_address, false);
ip_set (&dst0, &ip60->dst_address, false);
vlib_buffer_advance (b0, sizeof (*ip60));
ip_set (&src0, &ip60->src_address, false);
ip_set (&dst0, &ip60->dst_address, false);