Как получить локальный IP адрес

function LocalIP : string;
type
TaPInAddr = array [0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var phe : PHostEnt;
pptr : PaPInAddr;
Buffer : array [0..63] of char;
I : Integer;
GInitData : TWSADATA;
begin
WSAStartup($101, GInitData);
Result := '';
GetHostName(Buffer, SizeOf(Buffer));
phe :=GetHostByName(buffer);
if phe = nil then Exit;
pptr := PaPInAddr(Phe^.h_addr_list);
I := 0;
while pptr^[I] <> nil do begin
result:=StrPas(inet_ntoa(pptr^[I]^));
Inc(I);
end;
WSACleanup;
end;
или
uses
WinSock;
function GetLocalIP: String;
const WSVer = $101;
var
wsaData: TWSAData;
P: PHostEnt;
Buf: array [0..127] of Char;
begin
Result := '';
if WSAStartup(WSVer, wsaData) = 0 then
begin
if GetHostName(@Buf, 128) = 0 then
begin
P := GetHostByName(@Buf);
if P <> nil then
Result := iNet_ntoa(PInAddr(p^.h_addr_list^)^);
end;
WSACleanup;
end;
end;