--- net/dns/host_resolver_manager.cc.orig	2020-10-09 16:39:12.064069835 -0400
+++ net/dns/host_resolver_manager.cc	2020-10-09 16:42:49.738302772 -0400
@@ -2779,8 +2779,7 @@
   NetworkChangeNotifier::AddConnectionTypeObserver(this);
   if (system_dns_config_notifier_)
     system_dns_config_notifier_->AddObserver(this);
-#if defined(OS_POSIX) && !defined(OS_APPLE) && !defined(OS_OPENBSD) && \
-    !defined(OS_ANDROID)
+#if defined(__GLIBC__)
   EnsureDnsReloaderInit();
 #endif
 
--- net/dns/dns_reloader.cc.orig	2020-10-09 16:39:12.064069835 -0400
+++ net/dns/dns_reloader.cc	2020-10-09 16:44:30.442419823 -0400
@@ -4,9 +4,8 @@
 
 #include "net/dns/dns_reloader.h"
 
-#if defined(OS_POSIX) && !defined(OS_APPLE) && !defined(OS_OPENBSD) && \
-    !defined(OS_ANDROID) && !defined(OS_FUCHSIA)
-
+#if defined(__GLIBC__)
+ 
 #include <resolv.h>
 
 #include "base/lazy_instance.h"
--- net/dns/host_resolver_proc.cc.orig	2020-10-09 16:39:12.065069836 -0400
+++ net/dns/host_resolver_proc.cc	2020-10-09 16:45:09.641466644 -0400
@@ -159,8 +159,7 @@
   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
                                                 base::BlockingType::WILL_BLOCK);
 
-#if defined(OS_POSIX) && !defined(OS_APPLE) && !defined(OS_OPENBSD) && \
-    !defined(OS_ANDROID) && !defined(OS_FUCHSIA)
+#if defined(__GLIBC__)
   DnsReloaderMaybeReload();
 #endif
   base::Optional<AddressInfo> ai;
--- net/dns/dns_config_service_linux.cc.orig
+++ net/dns/dns_config_service_linux.cc
@@ -432,12 +432,6 @@
     base::ScopedBlockingCall scoped_blocking_call(
         FROM_HERE, base::BlockingType::MAY_BLOCK);
 
-    std::unique_ptr<struct __res_state> res = resolv_reader_->GetResState();
-    if (res) {
-      dns_config_ = ConvertResStateToDnsConfig(*res.get());
-      resolv_reader_->CloseResState(res.get());
-    }
-
     UMA_HISTOGRAM_BOOLEAN("Net.DNS.DnsConfig.Resolv.Read",
                           dns_config_.has_value());
     if (!dns_config_.has_value())
@@ -486,20 +480,11 @@
 
 std::unique_ptr<struct __res_state>
 DnsConfigServiceLinux::ResolvReader::GetResState() {
-  auto res = std::make_unique<struct __res_state>();
-  memset(res.get(), 0, sizeof(struct __res_state));
-
-  if (res_ninit(res.get()) != 0) {
-    CloseResState(res.get());
-    return nullptr;
-  }
-
-  return res;
+  return nullptr;
 }
 
 void DnsConfigServiceLinux::ResolvReader::CloseResState(
     struct __res_state* res) {
-  res_nclose(res);
 }
 
 DnsConfigServiceLinux::DnsConfigServiceLinux()
