Will try that.Sounds like a solution.

@hek

Thanx Hek.
I will order a W5100 today.
I did turn of debug, but i don´t know if i use 1.5.7
I have no problem compiling the <Ethernet.h>, so i go that way..

I try to convert from my serial gateway to a ethernet gateway.
I have downloaded the latest Lirary, tried booth the master and development ones.

I get errors when compiling with <UIPEthernet.h>
It works fine compiling with <Ethernet.h>
I use the ENC28J60 shield.

I get the following messages when compiling.

In file included from C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/Dhcp.h:7,
from C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:25,
from EthernetGateway.ino:53:
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:26:29: error: utility/mempool.h: No such file or directory
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:28:28: error: utility/uip.h: No such file or directory
In file included from EthernetGateway.ino:53:
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:27:37: error: utility/Enc28J60Network.h: No such file or directory
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:34:31: error: utility/uip_timer.h: No such file or directory
In file included from C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/Dhcp.h:7,
from C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:25,
from EthernetGateway.ino:53:
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:46: error: 'memaddress' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:47: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:48: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPUdp.h:49: error: 'memhandle' does not name a type
In file included from C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:28,
from EthernetGateway.ino:53:
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:48: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:54: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:55: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:56: error: 'memaddress' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:85: error: 'UIP_CONNS' was not declared in this scope
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:92: error: ISO C++ forbids declaration of 'memhandle' with no type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:92: error: expected ';' before '*' token
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:93: error: 'memhandle' has not been declared
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPClient.h:94: error: 'memhandle' has not been declared
In file included from EthernetGateway.ino:53:
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:88: error: field 'periodic_timer' has incomplete type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:90: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:91: error: 'memhandle' does not name a type
C:\Users\Kpeson\Documents\Arduino Mysensor Master 140911\libraries\UIPEthernet/UIPEthernet.h:95: error: 'Enc28J60Network' does not name a type