diff --git a/dhcpy6d/config.py b/dhcpy6d/config.py
index b5ce0ef..d8d0ec8 100644
--- a/dhcpy6d/config.py
+++ b/dhcpy6d/config.py
@@ -125,7 +125,7 @@ def __init__(self):
 
         # SOL_MAX_RT Option 82
         # see https://www.rfc-editor.org/rfc/rfc8415.html#page-127
-        self.MAX_SOLICITATION_REFRESH_TIME = '1200'
+        self.SOLICITATION_REFRESH_TIME = '1200'
 
         # config type
         # one of file, mysql, sqlite or none
@@ -732,11 +732,11 @@ def read_config(self, configfile):
                        f"'{self.INFORMATION_REFRESH_TIME}' is pretty short.")
 
         # check max solicitation refresh time
-        if not self.MAX_SOLICITATION_REFRESH_TIME.isdigit():
-            error_exit(f"{msg_prefix} Max solicitation refresh time '{self.MAX_SOLICITATION_REFRESH_TIME}' is invalid.")
-        elif not 60 <= int(self.MAX_SOLICITATION_REFRESH_TIME) <= 86400:
+        if not self.SOLICITATION_REFRESH_TIME.isdigit():
+            error_exit(f"{msg_prefix} Max solicitation refresh time '{self.SOLICITATION_REFRESH_TIME}' is invalid.")
+        elif not 60 <= int(self.SOLICITATION_REFRESH_TIME) <= 86400:
             error_exit(f"{msg_prefix} Max solicitation refresh time preference "
-                       f"'{self.MAX_SOLICITATION_REFRESH_TIME}' is not greater or equal to 60 and neither smaller or equal to 86400.")
+                       f"'{self.SOLICITATION_REFRESH_TIME}' is not greater or equal to 60 and neither smaller or equal to 86400.")
 
         # check validity of configuration source
         if self.STORE_CONFIG not in ['mysql', 'postgresql', 'sqlite', 'file', False]:
diff --git a/dhcpy6d/handler.py b/dhcpy6d/handler.py
index 707b245..bfc2468 100644
--- a/dhcpy6d/handler.py
+++ b/dhcpy6d/handler.py
@@ -498,9 +498,6 @@ def build_response(self, message_type_response, transaction, options_request, st
                         response_string += build_option(CONST.OPTION.STATUS_CODE,
                                                         f'{CONST.STATUS.NO_ADDRESSES_AVAILABLE:04x}')
 
-                        # just a test for https://github.com/HenriWahl/dhcpy6d/issues/64
-                        response_string += build_option(CONST.OPTION.RECONF_ACCEPT)
-
                         # options in answer to be logged
                         options_answer.append(CONST.OPTION.STATUS_CODE)
 
@@ -525,6 +522,10 @@ def build_response(self, message_type_response, transaction, options_request, st
                     log.info(f'{CONST.MESSAGE_DICT[message_type_response]} | '
                              f'transaction: {transaction.id} | '
                              f'options: {options_answer}')
+
+            # just a test for https://github.com/HenriWahl/dhcpy6d/issues/64
+            response_string += build_option(CONST.OPTION.RECONF_ACCEPT, '')
+
             # handler
             self.response = binascii.unhexlify(response_string)
 
diff --git a/dhcpy6d/options/option_20.py b/dhcpy6d/options/option_20.py
index 160142c..7b93b62 100644
--- a/dhcpy6d/options/option_20.py
+++ b/dhcpy6d/options/option_20.py
@@ -27,4 +27,4 @@ class Option(OptionTemplate):
     def build(self, **kwargs):
         response_string_part = self.convert_to_string(self.number, '')
         # options in answer to be logged
-        return response_string_part, self.number
+        return response_string_part, self.number
\ No newline at end of file
diff --git a/dhcpy6d/options/option_82.py b/dhcpy6d/options/option_82.py
index c5ce0c1..de1884a 100644
--- a/dhcpy6d/options/option_82.py
+++ b/dhcpy6d/options/option_82.py
@@ -22,9 +22,9 @@
 
 class Option(OptionTemplate):
     """
-    Option 32 Information Refresh Time
+    Option 82 SOL_MAX_RT (sic!)
     """
     def build(self, **kwargs):
-        response_string_part = self.convert_to_string(self.number, f'{int(cfg.MAX_SOLICITATION_REFRESH_TIME):08x}')
+        response_string_part = self.convert_to_string(self.number, f'{int(cfg.SOLICITATION_REFRESH_TIME):08x}')
         # options in answer to be logged
         return response_string_part, self.number
diff --git a/dhcpy6d/options/option_83.py b/dhcpy6d/options/option_83.py
new file mode 100644
index 0000000..5500da8
--- /dev/null
+++ b/dhcpy6d/options/option_83.py
@@ -0,0 +1,30 @@
+# DHCPy6d DHCPv6 Daemon
+#
+# Copyright (C) 2009-2024 Henri Wahl <henri@dhcpy6d.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+
+from dhcpy6d.config import cfg
+from dhcpy6d.options import OptionTemplate
+
+
+class Option(OptionTemplate):
+    """
+    Option 83 INF_MAX_RT (sic!)
+    """
+    def build(self, **kwargs):
+        response_string_part = self.convert_to_string(self.number, f'{int(cfg.INFORMATION_REFRESH_TIME):08x}')
+        # options in answer to be logged
+        return response_string_part, self.number