diff --git a/doc/sphinx/arm/hooks.rst b/doc/sphinx/arm/hooks.rst
index 32d55df40c..8d12f82a70 100644
--- a/doc/sphinx/arm/hooks.rst
+++ b/doc/sphinx/arm/hooks.rst
@@ -950,7 +950,7 @@ Examples:
 
    "request-parser-format":
        "ifelse(pkt4.msgtype == 4 or pkt4.msgtype == 7,
-            'Address: ' + addrtotext(pkt4.yiaddr) + ' has been released from a device with hardware address: hwtype=' + substring(hexstring(pkt4.htype, ''), 7, 1) + ' ' + hexstring(pkt4.mac, ':') +
+            'Address: ' + addrtotext(pkt4.ciaddr) + ' has been released from a device with hardware address: hwtype=' + substring(hexstring(pkt4.htype, ''), 7, 1) + ' ' + hexstring(pkt4.mac, ':') +
                 ifelse(option[61].exists, ', client-id: ' + hexstring(option[61].hex, ':'), '') +
                 ifelse(pkt4.giaddr == 0.0.0.0, '', ' connected via relay at address: ' + addrtotext(pkt4.giaddr) +
                     ifelse(option[82].option[1].exists, ', circuit-id: ' + hexstring(option[82].option[1].hex, ':'), '') +
@@ -997,7 +997,7 @@ Examples:
                     ifelse(option[82].option[2].exists, ', remote-id: ' + hexstring(option[82].option[2].hex, ':'), '') +
                     ifelse(option[82].option[6].exists, ', subscriber-id: ' + hexstring(option[82].option[6].hex, ':'), '')),
             ifelse(pkt4.msgtype == 4 or pkt4.msgtype == 7,
-                'Address: ' + addrtotext(pkt4.yiaddr) + ' has been released from a device with hardware address: hwtype=' + substring(hexstring(pkt4.htype, ''), 7, 1) + ' ' + hexstring(pkt4.mac, ':') +
+                'Address: ' + addrtotext(pkt4.ciaddr) + ' has been released from a device with hardware address: hwtype=' + substring(hexstring(pkt4.htype, ''), 7, 1) + ' ' + hexstring(pkt4.mac, ':') +
                     ifelse(option[61].exists, ', client-id: ' + hexstring(option[61].hex, ':'), '') +
                     ifelse(pkt4.giaddr == 0.0.0.0, '', ' connected via relay at address: ' + addrtotext(pkt4.giaddr) +
                         ifelse(option[82].option[1].exists, ', circuit-id: ' + hexstring(option[82].option[1].hex, ':'), '') +