diff --git a/pc/channel_unittest.cc b/pc/channel_unittest.cc
index e7a50dcf9a..92d3b24450 100644
--- a/pc/channel_unittest.cc
+++ b/pc/channel_unittest.cc
@@ -1030,8 +1030,10 @@ class ChannelTest : public testing::Test, public sigslot::has_slots<> {
     static constexpr int kLastPacketId = 100;
     // Ipv4(20) + UDP(8).
     static constexpr int kTransportOverheadPerPacket = 28;
+    static constexpr int kSrtpOverheadPerPacket = 10;
 
-    CreateChannels(0, 0);
+    CreateChannels(DTLS, DTLS);
+    SendInitiate();
 
     typename T::MediaChannel* media_channel1 =
         static_cast<typename T::MediaChannel*>(channel1_->media_channel());
@@ -1073,7 +1075,7 @@ class ChannelTest : public testing::Test, public sigslot::has_slots<> {
     EXPECT_EQ(expected_network_route, media_channel1->last_network_route());
     EXPECT_EQ(kLastPacketId,
               media_channel1->last_network_route().last_sent_packet_id);
-    EXPECT_EQ(kTransportOverheadPerPacket,
+    EXPECT_EQ(kTransportOverheadPerPacket + kSrtpOverheadPerPacket,
               media_channel1->transport_overhead_per_packet());
   }
 
diff --git a/pc/dtlssrtptransport.cc b/pc/dtlssrtptransport.cc
index 03771f4988..f6cbf4d288 100644
--- a/pc/dtlssrtptransport.cc
+++ b/pc/dtlssrtptransport.cc
@@ -33,6 +33,8 @@ DtlsSrtpTransport::DtlsSrtpTransport(
       this, &DtlsSrtpTransport::OnPacketReceived);
   srtp_transport_->SignalReadyToSend.connect(this,
                                              &DtlsSrtpTransport::OnReadyToSend);
+  srtp_transport_->SignalNetworkRouteChanged.connect(
+      this, &DtlsSrtpTransport::OnNetworkRouteChanged);
   srtp_transport_->SignalWritableState.connect(
       this, &DtlsSrtpTransport::OnWritableState);
   srtp_transport_->SignalSentPacket.connect(this,
@@ -356,4 +358,9 @@ void DtlsSrtpTransport::OnReadyToSend(bool ready) {
   SignalReadyToSend(ready);
 }
 
+void DtlsSrtpTransport::OnNetworkRouteChanged(
+    rtc::Optional<rtc::NetworkRoute> network_route) {
+  SignalNetworkRouteChanged(network_route);
+}
+
 }  // namespace webrtc
diff --git a/pc/dtlssrtptransport.h b/pc/dtlssrtptransport.h
index 55b96c1645..4f6e697555 100644
--- a/pc/dtlssrtptransport.h
+++ b/pc/dtlssrtptransport.h
@@ -88,6 +88,7 @@ class DtlsSrtpTransport : public RtpTransportInternalAdapter {
                         rtc::CopyOnWriteBuffer* packet,
                         const rtc::PacketTime& packet_time);
   void OnReadyToSend(bool ready);
+  void OnNetworkRouteChanged(rtc::Optional<rtc::NetworkRoute> network_route);
 
   bool writable_ = false;
   std::unique_ptr<SrtpTransport> srtp_transport_;
diff --git a/pc/srtptransport.cc b/pc/srtptransport.cc
index 625034dfab..2c827afa58 100644
--- a/pc/srtptransport.cc
+++ b/pc/srtptransport.cc
@@ -177,7 +177,6 @@ void SrtpTransport::OnPacketReceived(bool rtcp,
 }
 
 void SrtpTransport::OnNetworkRouteChanged(
-
     rtc::Optional<rtc::NetworkRoute> network_route) {
   // Only append the SRTP overhead when there is a selected network route.
   if (network_route) {