Revert the BUFFSIZE from PAGE_SIZE to constant

Change-Id: Id9300b55b1c32fff2d1f9fffdcfa6c3d6e021d38
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/routing_table.hpp b/routing_table.hpp
index e137e23..c96013e 100644
--- a/routing_table.hpp
+++ b/routing_table.hpp
@@ -1,7 +1,6 @@
 #pragma once
 
 #include <asm/types.h>
-#include <sys/user.h>
 #include <sys/socket.h>
 #include <linux/netlink.h>
 
@@ -16,7 +15,7 @@
 {
 namespace route
 {
-constexpr auto BUFSIZE = PAGE_SIZE;
+constexpr auto BUFSIZE = 4096;
 
 struct Entry
 {