Question

i tried to write program adding ip address using this function

 
DWORD AddIPAddress(
  __in   IPAddr Address,
  __in   IPMask IpMask,
  __in   DWORD IfIndex,
  __out  PULONG NTEContext,
  __out  PULONG NTEInstance
);

I have added it but how can I delete it. DeleteIPAddress takes NTEContext as Parameter how can i get it in MSDN they write it is returned by AddIPAddress function but when i call it for the second time with the same ip address it returns an error 2. What to do?

I can view add ip addresses using Ipconfig command in cmd, may be there is some other method to view or delete it manually

Answer 1

You can’t do this. From MSDN:

To use DeleteIPAddress, AddIPAddress
must first be called to get the handle
NTEContext. The previous procedure
assumes that AddIPAddress has already
been called somewhere in the code, and
NTEContext has been saved and remains
uncorrupted.

The lifetime of the added address is as shown here:

The AddIPAddress function is used to
add a new IPv4 address entry on a
local computer. The IPv4 address added
by the AddIPAddress function is not
persistent. The IPv4 address exists
only as long as the adapter object
exists. Restarting the computer
destroys the IPv4 address, as does
manually resetting the network
interface card (NIC). Also, certain
PnP events may destroy the address.