Default Gateway

[Mike Bertosh]

Hi all,

I am trying to create a function that I can call to change the default gateway address. I 
am using the rtrequest() function to remove the default gateway from the routing table 
and then add the new address.Is there a function that will already do this for me? 
Here is the code I have been trying to get to work.

struct rtentry **net_nrt;
memset (&address, '\0', sizeof address);
address.sin_len = sizeof address;
address.sin_family =AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
memset (&netmask, '\0', sizeof netmask);
netmask.sin_len = sizeof netmask;netmask.sin_family =AF_INET;
netmask.sin_addr.s_addr = INADDR_ANY;
memset (&gateway, '\0', sizeof gateway);
gateway.sin_len = sizeof gateway;
gateway.sin_family = AF_INET;
gateway.sin_addr.s_addr = inet_addr(rtems_gateway);
rtems_bsdnet_semaphore_obtain ();
rtems_bsdnet_rtrequest (RTM_DELETE,
		(struct sockaddr *)&address,		
		(struct sockaddr *)&gateway,			
		(struct sockaddr *)&netmask,	
		(RTF_UP | RTF_GATEWAY | RTF_STATIC),net_nrt);
rtfree(*net_nrt);
memset (&gateway, '\0', sizeof gateway);
gateway.sin_len = sizeof gateway;
gateway.sin_family = AF_INET;
gateway.sin_addr.s_addr = inet_addr (tempGateway);
rtems_bsdnet_rtrequest (RTM_ADD,
	(struct sockaddr *)&address,	
	(struct sockaddr *)&gateway,	
	(struct sockaddr *)&netmask, 
	(RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL);
rtems_bsdnet_semaphore_release ();

This code seems to work when I remove the rtfree() function. Is there something 
wrong with rtfree() or I am doing something wrong? I'd really appreciate any help. 
Thanks for your time.

Mike Bertosh
Motion Control Systems, Inc.
New River, Va
540.731.0540