diff --git a/rtc_base/network.cc b/rtc_base/network.cc
index 58764c7..4906184 100644
--- a/rtc_base/network.cc
+++ b/rtc_base/network.cc
@@ -11,15 +11,7 @@
 #include "rtc_base/network.h"
 
 #if defined(WEBRTC_POSIX)
-// linux/if.h can't be included at the same time as the posix sys/if.h, and
-// it's transitively required by linux/route.h, so include that version on
-// linux instead of the standard posix one.
-#if defined(WEBRTC_LINUX)
-#include <linux/if.h>
-#include <linux/route.h>
-#elif !defined(__native_client__)
 #include <net/if.h>
-#endif
 #endif  // WEBRTC_POSIX
 
 #if defined(WEBRTC_WIN)
@@ -30,8 +22,6 @@
 #include "rtc_base/ifaddrs_converter.h"
 #endif
 
-#include <stdio.h>
-
 #include <memory>
 
 #include "absl/algorithm/container.h"
@@ -764,33 +754,6 @@
 }
 #endif  // WEBRTC_WIN
 
-#if defined(WEBRTC_LINUX)
-bool IsDefaultRoute(const std::string& network_name) {
-  FILE* f = fopen("/proc/net/route", "r");
-  if (!f) {
-    RTC_LOG(LS_WARNING)
-        << "Couldn't read /proc/net/route, skipping default "
-           "route check (assuming everything is a default route).";
-    return true;
-  }
-  bool is_default_route = false;
-  char line[500];
-  while (fgets(line, sizeof(line), f)) {
-    char iface_name[256];
-    unsigned int iface_ip, iface_gw, iface_mask, iface_flags;
-    if (sscanf(line, "%255s %8X %8X %4X %*d %*u %*d %8X", iface_name, &iface_ip,
-               &iface_gw, &iface_flags, &iface_mask) == 5 &&
-        network_name == iface_name && iface_mask == 0 &&
-        (iface_flags & (RTF_UP | RTF_HOST)) == RTF_UP) {
-      is_default_route = true;
-      break;
-    }
-  }
-  fclose(f);
-  return is_default_route;
-}
-#endif
-
 bool BasicNetworkManager::IsIgnoredNetwork(const Network& network) const {
   // Ignore networks on the explicit ignore list.
   for (const std::string& ignored_name : network_ignore_list_) {