diff --git a/confluent_server/confluent/discovery/protocols/pxe.py b/confluent_server/confluent/discovery/protocols/pxe.py
index f77ed0b8..cb2702f0 100644
--- a/confluent_server/confluent/discovery/protocols/pxe.py
+++ b/confluent_server/confluent/discovery/protocols/pxe.py
@@ -379,13 +379,14 @@ def check_reply(node, info, packet, sock, cfg, reqview):
     repview[249:255] = b'\x33\x04\x00\x00\x00\xf0'  # fixed short lease time
     repview[255:257] = b'\x61\x11'
     repview[257:274] = packet[97]
-    repview[274] = 0xff  # end of options, should always be last byte
+    repview[274:285] = b'\x3c\x09PXEClient'
+    repview[285] = 0xff  # end of options, should always be last byte
     repview = memoryview(reply)
-    pktlen = struct.pack('!H', 275 + 28)  # ip+udp = 28
+    pktlen = struct.pack('!H', 286 + 28)  # ip+udp = 28
     repview[2:4] = pktlen
     curripsum = ~(_ipsum(constiphdrsum + pktlen + myipn)) & 0xffff
     repview[10:12] = struct.pack('!H', curripsum)
-    repview[24:26] = struct.pack('!H', 275 + 8)
+    repview[24:26] = struct.pack('!H', 286 + 8)
     datasum = _ipsum(bytes(repview[12:]) + b'\x00\x11' + bytes(
         repview[24:26]))
     datasum = ~datasum & 0xffff
@@ -401,7 +402,7 @@ def check_reply(node, info, packet, sock, cfg, reqview):
     targ.sll_protocol = socket.htons(0x800)
     targ.sll_ifindex = info['netinfo']['ifidx']
     pkt = ctypes.byref((ctypes.c_char * 284).from_buffer(repview))
-    sendto(tsock.fileno(), pkt, 275 + 28, 0, ctypes.byref(targ),
+    sendto(tsock.fileno(), pkt, 286 + 28, 0, ctypes.byref(targ),
            ctypes.sizeof(targ))
     print('Thinking about reply to {0}'.format(node))