Suppress route command output to console

src/tun_route.c

@@ -162,7 +162,7 @@ static int ip_route_cmd(const char *ifname, uint32_t network, uint8_t prefix_len
     addr.s_addr = network;
 
     char cmdline[256];
-    snprintf(cmdline, sizeof(cmdline), "ip route %s %s/%d dev %s 2>/dev/null",
+    snprintf(cmdline, sizeof(cmdline), "ip route %s %s/%d dev %s >/dev/null 2>&1",
              cmd, ip_to_str(&addr, AF_INET).str, prefix_len, ifname);
     
     int ret = system(cmdline);
@@ -210,14 +210,14 @@ int tun_route_del(uint32_t ifindex, const char *ifname, uint32_t network, uint8_
 int tun_route_flush(const char *ifname) {
     // Use ip route flush as primary method - works reliably
     char cmdline[256];
-    snprintf(cmdline, sizeof(cmdline), "ip route flush dev %s 2>/dev/null", ifname);
+    snprintf(cmdline, sizeof(cmdline), "ip route flush dev %s >/dev/null 2>&1", ifname);
     int ret = system(cmdline);
     
     if (ret != 0) {
         // Fallback: try to list and delete routes one by one
         DEBUG_WARN(DEBUG_CATEGORY_TUN, "ip route flush failed, trying alternative method");
 snprintf(cmdline, sizeof(cmdline), 
-                 "ip route show dev %s 2>/dev/null | while read r; do ip route del $r dev %s 2>/dev/null; done",
+             "ip route show dev %s 2>/dev/null | while read r; do ip route del $r dev %s >/dev/null 2>&1; done",
              ifname, ifname);
         ret = system(cmdline);
     }
@@ -457,7 +457,7 @@ static int route_cmd(const char *ifname, uint32_t network, uint8_t prefix_len, c
     addr.s_addr = htonl(network);
 
     char cmdline[256];
-    snprintf(cmdline, sizeof(cmdline), "route %s -net %s/%d -interface %s 2>/dev/null",
+    snprintf(cmdline, sizeof(cmdline), "route %s -net %s/%d -interface %s >/dev/null 2>&1",
              cmd, ip_to_str(&addr, AF_INET).str, prefix_len, ifname);
     
     int ret = system(cmdline);
@@ -503,7 +503,7 @@ int tun_route_flush(const char *ifname) {
     char cmdline[256];
     snprintf(cmdline, sizeof(cmdline), 
              "route -n show -interface %s 2>/dev/null | grep -v '^[[:space:]]*#' | "
-             "awk '/^[0-9]+\\./{print $1}' | while read r; do route delete -net $r 2>/dev/null; done",
+             "awk '/^[0-9]+\\./{print $1}' | while read r; do route delete -net $r >/dev/null 2>&1; done",
              ifname);
     int ret = system(cmdline);