diff --git a/eth/p2p/discoveryv5/protocol.nim b/eth/p2p/discoveryv5/protocol.nim
index 0c3942d..5d886c2 100644
--- a/eth/p2p/discoveryv5/protocol.nim
+++ b/eth/p2p/discoveryv5/protocol.nim
@@ -91,6 +91,7 @@ import
 export
   options, results, node, enr, encoding.maxDiscv5PacketSize
 
+declareCounter discv5_network_bytes, "discv5 traffic", labels = ["direction"]
 declareCounter discovery_message_requests_outgoing,
   "Discovery protocol outgoing message requests", labels = ["response"]
 declareCounter discovery_message_requests_incoming,
@@ -276,6 +277,8 @@ proc sendTo(d: Protocol, a: Address, data: seq[byte]): Future[void] {.async.} =
     # because of ping failures due to own network connection failure.
     warn "Discovery send failed", msg = e.msg, address = $ta
 
+  discv5_network_bytes.inc(data.len, labelValues = ["out"])
+
 proc send*(d: Protocol, a: Address, data: seq[byte]) =
   asyncSpawn sendTo(d, a, data)
 
@@ -422,6 +425,8 @@ proc sendWhoareyou(d: Protocol, toId: NodeId, a: Address,
     debug "Node with this id already has ongoing handshake, ignoring packet"
 
 proc receive*(d: Protocol, a: Address, packet: openArray[byte]) =
+  discv5_network_bytes.inc(packet.len, labelValues = ["in"])
+
   let decoded = d.codec.decodePacket(a, packet)
   if decoded.isOk:
     let packet = decoded[]