diff --git a/relay-java/src/main/java/com/genymobile/gnirehtet/relay/IPv4Packet.java b/relay-java/src/main/java/com/genymobile/gnirehtet/relay/IPv4Packet.java
index ae0316e2..85ef2b1e 100644
--- a/relay-java/src/main/java/com/genymobile/gnirehtet/relay/IPv4Packet.java
+++ b/relay-java/src/main/java/com/genymobile/gnirehtet/relay/IPv4Packet.java
@@ -33,6 +33,10 @@ public IPv4Packet(ByteBuffer raw) {
         this.raw = raw;
         raw.rewind();
 
+        if (Log.isVerboseEnabled()) {
+            Log.v(TAG, "IPv4Packet: " + Binary.buildPacketString(raw));
+        }
+
         ipv4Header = new IPv4Header(raw.duplicate());
         if (!ipv4Header.isSupported()) {
             Log.d(TAG, "Unsupported IPv4 headers");
diff --git a/relay-rust/src/relay/ipv4_packet_buffer.rs b/relay-rust/src/relay/ipv4_packet_buffer.rs
index f938befc..a0a42f7d 100644
--- a/relay-rust/src/relay/ipv4_packet_buffer.rs
+++ b/relay-rust/src/relay/ipv4_packet_buffer.rs
@@ -14,9 +14,12 @@
  * limitations under the License.
  */
 
+use super::binary;
 use super::byte_buffer::ByteBuffer;
 use super::ipv4_header;
 use super::ipv4_packet::{Ipv4Packet, MAX_PACKET_LENGTH};
+
+use log::*;
 use std::io;
 
 pub struct Ipv4PacketBuffer {
@@ -36,6 +39,7 @@ impl Ipv4PacketBuffer {
 
     fn available_packet_length(&self) -> Option<u16> {
         let data = self.buf.peek();
+        trace!("Parse packet: {}", binary::build_packet_string(data));
         if let Some((version, length)) = ipv4_header::peek_version_length(data) {
             assert!(version == 4, "Not an Ipv4 packet, version={}", version);
             if length as usize <= data.len() {