diff --git a/src/bin/dhcp4/dhcp4_messages.cc b/src/bin/dhcp4/dhcp4_messages.cc
index 8765442cbe..da47f7221a 100644
--- a/src/bin/dhcp4/dhcp4_messages.cc
+++ b/src/bin/dhcp4/dhcp4_messages.cc
@@ -154,6 +154,7 @@ extern const isc::log::MessageID DHCP4_RELEASE_EXPIRED = "DHCP4_RELEASE_EXPIRED"
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL = "DHCP4_RELEASE_FAIL";
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL_NO_LEASE = "DHCP4_RELEASE_FAIL_NO_LEASE";
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL_WRONG_CLIENT = "DHCP4_RELEASE_FAIL_WRONG_CLIENT";
+extern const isc::log::MessageID DHCP4_REQUEST = "DHCP4_REQUEST";
 extern const isc::log::MessageID DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED = "DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED";
 extern const isc::log::MessageID DHCP4_RESERVED_HOSTNAME_ASSIGNED = "DHCP4_RESERVED_HOSTNAME_ASSIGNED";
 extern const isc::log::MessageID DHCP4_RESPONSE_DATA = "DHCP4_RESPONSE_DATA";
@@ -331,6 +332,7 @@ const char* values[] = {
     "DHCP4_RELEASE_FAIL", "%1: failed to remove lease for address %2",
     "DHCP4_RELEASE_FAIL_NO_LEASE", "%1: client is trying to release non-existing lease %2",
     "DHCP4_RELEASE_FAIL_WRONG_CLIENT", "%1: client is trying to release the lease %2 which belongs to a different client",
+    "DHCP4_REQUEST", "%1: server is processing DHCPREQUEST with hint=%2",
     "DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED", "Multi-threading is enabled and host reservations lookup is always performed first.",
     "DHCP4_RESERVED_HOSTNAME_ASSIGNED", "%1: server assigned reserved hostname %2",
     "DHCP4_RESPONSE_DATA", "%1: responding with packet %2 (type %3), packet details: %4",
diff --git a/src/bin/dhcp4/dhcp4_messages.h b/src/bin/dhcp4/dhcp4_messages.h
index 45b69867b3..f60dbbc68c 100644
--- a/src/bin/dhcp4/dhcp4_messages.h
+++ b/src/bin/dhcp4/dhcp4_messages.h
@@ -155,6 +155,7 @@ extern const isc::log::MessageID DHCP4_RELEASE_EXPIRED;
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL;
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL_NO_LEASE;
 extern const isc::log::MessageID DHCP4_RELEASE_FAIL_WRONG_CLIENT;
+extern const isc::log::MessageID DHCP4_REQUEST;
 extern const isc::log::MessageID DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED;
 extern const isc::log::MessageID DHCP4_RESERVED_HOSTNAME_ASSIGNED;
 extern const isc::log::MessageID DHCP4_RESPONSE_DATA;
diff --git a/src/bin/dhcp4/dhcp4_messages.mes b/src/bin/dhcp4/dhcp4_messages.mes
index 8dea2733a2..4858415cf6 100644
--- a/src/bin/dhcp4/dhcp4_messages.mes
+++ b/src/bin/dhcp4/dhcp4_messages.mes
@@ -551,6 +551,14 @@ about the address that the client would like to have allocated.
 If there is no hint, the argument should provide the text indicating
 that the hint hasn't been sent.
 
+% DHCP4_REQUEST %1: server is processing DHCPREQUEST with hint=%2
+This is a debug message that indicates the processing of a received DHCPREQUEST
+message. The first argument contains the client and the transaction
+identification information. The second argument may hold the hint for the server
+about the address that the client would like to have allocated.
+If there is no hint, the argument should provide the text indicating
+that the hint hasn't been sent.
+
 % DHCP4_LEASE_ALLOC %1: lease %2 has been allocated for %3 seconds
 This informational message indicates that the server successfully granted a
 lease in response to client's DHCPREQUEST message. The lease information will
diff --git a/src/bin/dhcp4/dhcp4_srv.cc b/src/bin/dhcp4/dhcp4_srv.cc
index bc24f72d7a..e2a4cc1a59 100644
--- a/src/bin/dhcp4/dhcp4_srv.cc
+++ b/src/bin/dhcp4/dhcp4_srv.cc
@@ -2668,6 +2668,10 @@ Dhcpv4Srv::assignLease(Dhcpv4Exchange& ex) {
         LOG_DEBUG(lease4_logger, DBG_DHCP4_DETAIL, DHCP4_DISCOVER)
             .arg(query->getLabel())
             .arg(hint != IOAddress::IPV4_ZERO_ADDRESS() ? hint.toText() : "(no hint)");
+    } else {
+        LOG_DEBUG(lease4_logger, DBG_DHCP4_DETAIL, DHCP4_REQUEST)
+            .arg(query->getLabel())
+            .arg(hint != IOAddress::IPV4_ZERO_ADDRESS() ? hint.toText() : "(no hint)");
     }
 
     // If there is no subnet configuration for that client we ignore the