diff --git a/inc/net/mbuf.h b/inc/net/mbuf.h
index 06d6d228..c96fa595 100644
--- a/inc/net/mbuf.h
+++ b/inc/net/mbuf.h
@@ -15,7 +15,7 @@
 #include <base/list.h>
 #include <iokernel/queue.h>
 
-#define MBUF_DEFAULT_LEN	2048
+#define MBUF_DEFAULT_LEN	131072
 #define MBUF_DEFAULT_HEADROOM	128
 
 
diff --git a/iokernel/tx.c b/iokernel/tx.c
index fa3e6d6b..a9da12a5 100644
--- a/iokernel/tx.c
+++ b/iokernel/tx.c
@@ -17,7 +17,7 @@
 #include "base/byteorder.h"
 
 #define TX_PREFETCH_STRIDE 2
-#define TX_MAX_SEGS (IOKERNEL_TX_BURST_SIZE * 50)
+#define TX_MAX_SEGS (IOKERNEL_TX_BURST_SIZE * 128)
 #define UDP_OFFSET 34
 #define MTU_SIZE 1500
 
diff --git a/runtime/net/defs.h b/runtime/net/defs.h
index e16fa220..bd692d6b 100644
--- a/runtime/net/defs.h
+++ b/runtime/net/defs.h
@@ -13,7 +13,7 @@
 #include "../defs.h"
 
 /* Maximum buffer for TX packets */
-#define MAX_BUF_LEN 65536
+#define MAX_BUF_LEN 131072
 
 extern struct mempool net_tx_buf_mp;