Here is the relevant snippet.
15:37:27.152229 IP (tos 0x0, ttl 64, id 34010, offset 0, flags [DF], proto TCP (6), length 40)
192.168.1.83.57540 > parentserver.domain.http: Flags [.], cksum 0x533d (correct), seq 1, ack 1, win 29, length 0
E..(..@.@.2....S...Q...PD....M..P...S=........
15:37:27.152278 IP (tos 0x0, ttl 64, id 34011, offset 0, flags [DF], proto TCP (6), length 633)
192.168.1.83.57540 > parentserver.domain.http: Flags [P.], cksum 0xe357 (correct), seq 1:594, ack 1, win 29, length 593
E..y..@.@./....S...Q...PD....M..P....W..POST /nrdp/ HTTP/1.1
Host: 192.168.1.81
Accept: text/*
User-Agent: BinGet/1.00.A (http://www.bin-co.com/php/scripts/load/)
Connection: Close
Content-Type: application/x-www-form-urlencoded
Content-Length: 373
token=cloudaccess1&cmd=submitcheck&XMLDATA=%3C%3Fxml+version%3D%271.0%27%3F%3E+%0A%3Ccheckresults%3E%0A%0A++++%3Ccheckresult+type%3D%27host%27++checktype%3D%271%27%3E%0A++++++++%3Chostname%3Ecentos1%3C%2Fhostname%3E%0A++++++++%3Cstate%3E0%3C%2Fstate%3E%0A++++++++%3Coutput%3EThe+host+is+up+and+OK%3C%2Foutput%3E%0A++++%3C%2Fcheckresult%3E%0A++++++++%0A%3C%2Fcheckresults%3E
15:37:27.152299 IP (tos 0x0, ttl 64, id 34368, offset 0, flags [DF], proto TCP (6), length 40)
parentserver.domain.http > 192.168.1.83.57540: Flags [.], cksum 0x50eb (correct), seq 1, ack 594, win 30, length 0
E..(.@@.@.0....Q...S.P...M..D..mP...P...
15:37:27.152454 IP (tos 0x0, ttl 64, id 34369, offset 0, flags [DF], proto TCP (6), length 477)
parentserver.domain.http > 192.168.1.83.57540: Flags [P.], cksum 0xdeb1 (correct), seq 1:438, ack 594, win 30, length 437
E....A@.@......Q...S.P...M..D..mP.......HTTP/1.1 302 Found
Date: Mon, 12 Feb 2018 23:37:27 GMT
Server: Apache
X-Frame-Options: SAMEORIGIN
Location: https://192.168.1.81/nrdp/
Content-Length: 210
Connection: close
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="https://192.168.1.81/nrdp/">here</a>.</p>
</body></html>