Auto set route on macos

include/columnlynx/common/net/virtual_interface.hpp

@@ -46,7 +46,7 @@ namespace ColumnLynx::Net {
 
             bool configureIP(uint32_t clientIP, uint32_t serverIP,
                              uint8_t prefixLen, uint16_t mtu);
-
+                             
             void resetIP();
 
             std::vector<uint8_t> readPacket();

src/common/virtual_interface.cpp

@@ -326,6 +326,13 @@ namespace ColumnLynx::Net {
                  mIfName.c_str()
         );
         system(cmd);
+
+        // Wipe old routes
+        //snprintf(cmd, sizeof(cmd),
+        //         "route -n delete -net %s",
+        //         mIfName.c_str()
+        //);
+        //system(cmd);
     #elif defined(_WIN32)
         char cmd[512];
         // Remove any persistent routes associated with this interface
@@ -406,6 +413,12 @@ namespace ColumnLynx::Net {
                  mIfName.c_str(), ipStr.c_str(), peerStr.c_str(), mtu, prefixStr.c_str());
         system(cmd);
 
+        // Host bits are auto-normalized by the kernel on macOS, so we don't need to worry about them not being zeroed out.
+        snprintf(cmd, sizeof(cmd),
+                 "route -n add -net %s/%d -interface %s",
+                 ipStr.c_str(), prefixLen, mIfName.c_str());
+        system(cmd);
+
         Utils::log("Executed command: " + std::string(cmd));
     
         return true;