MTU: Setting of MTU on software interface (instead of hardware interface)

[vpp.git] / src / vnet / ip / icmp4.c

diff --git a/src/vnet/ip/icmp4.c b/src/vnet/ip/icmp4.c
index 1fe01e4..a4808f2 100644 (file)
--- a/src/vnet/ip/icmp4.c
+++ b/src/vnet/ip/icmp4.c
@@ -513,13 +513,15 @@ ip4_icmp_error (vlib_main_t * vm,
                  b->current_length = 0;
                }
            }
-         p0->current_length =
-           p0->current_length > 576 ? 576 : p0->current_length;
 
          /* Add IP header and ICMPv4 header including a 4 byte data field */
          vlib_buffer_advance (p0,
                               -sizeof (ip4_header_t) -
                               sizeof (icmp46_header_t) - 4);
+
+         p0->current_length =
+           p0->current_length > 576 ? 576 : p0->current_length;
+
          out_ip0 = vlib_buffer_get_current (p0);
          icmp0 = (icmp46_header_t *) & out_ip0[1];