diff --git a/debian/ngcp-kamailio.kamailio-lb.service b/debian/ngcp-kamailio.kamailio-lb.service
index 06bc8239a..b9d6c01d3 100644
--- a/debian/ngcp-kamailio.kamailio-lb.service
+++ b/debian/ngcp-kamailio.kamailio-lb.service
@@ -17,7 +17,6 @@ PIDFile=/run/kamailio/kamailio.lb.pid
 RuntimeDirectory=kamailio
 RuntimeDirectoryMode=0750
 RuntimeDirectoryPreserve=yes
-Environment='LD_PRELOAD=/usr/lib/x86_64-linux-gnu/kamailio/openssl_mutex_shared/openssl_mutex_shared.so'
 Environment='CFGFILE=/etc/kamailio/lb/kamailio.cfg'
 # Values of SHM_MEMORY=64 and PKG_MEMORY=16 taken from old sysvinit file
 # Amount of shared memory to allocate for the running Kamailio server (in MiB)
diff --git a/debian/patches/debian/no_lib64_on_64_bits.patch b/debian/patches/debian/no_lib64_on_64_bits.patch
index d28fe10c4..d04d7da2b 100644
--- a/debian/patches/debian/no_lib64_on_64_bits.patch
+++ b/debian/patches/debian/no_lib64_on_64_bits.patch
@@ -1,6 +1,6 @@
 --- a/src/Makefile.defs
 +++ b/src/Makefile.defs
-@@ -388,15 +388,7 @@ endif
+@@ -424,15 +424,7 @@ endif
  
  $(info target architecture <$(ARCH)>, host architecture <$(HOST_ARCH)>)
  
diff --git a/debian/patches/series b/debian/patches/series
index 452eae55a..48fcd85a5 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -52,6 +52,5 @@ sipwise/db_redis_master_sets.patch
 sipwise/db_redis_fixes.patch
 sipwise/sca-fix-memleaks.patch
 sipwise/presence_dfks_null_ptr_fixes.patch
-sipwise/switch_from_python2_to_python3.patch
 sipwise/rtpengine_play_dtmf.patch
 sipwise/db_redis_eval_fix.patch
diff --git a/debian/patches/sipwise/openssl-locking.patch b/debian/patches/sipwise/openssl-locking.patch
index e8d2191e4..a46342ab1 100644
--- a/debian/patches/sipwise/openssl-locking.patch
+++ b/debian/patches/sipwise/openssl-locking.patch
@@ -78,7 +78,7 @@
 +}
 --- a/src/modules/tls/Makefile
 +++ b/src/modules/tls/Makefile
-@@ -33,6 +33,8 @@
+@@ -34,6 +34,8 @@
  # dcm: tls.cfg installed via local 'install-cfg' to update paths
  #MOD_INSTALL_CFGS=tls.cfg
  
diff --git a/debian/patches/sipwise/rtpengine-play-media.patch b/debian/patches/sipwise/rtpengine-play-media.patch
index dac3242b3..2971422a1 100644
--- a/debian/patches/sipwise/rtpengine-play-media.patch
+++ b/debian/patches/sipwise/rtpengine-play-media.patch
@@ -108,7 +108,7 @@
  static bencode_item_t *rtpp_function_call_ok(bencode_buffer_t *bencbuf, struct sip_msg *msg,
  		enum rtpe_operation op, const char *flags_str, str *body)
  {
-@@ -3340,8 +3381,9 @@
+@@ -3349,8 +3390,9 @@
  	return 1;
  }
  
@@ -120,7 +120,7 @@
  {
  	int ret, more;
  
-@@ -3354,7 +3396,7 @@
+@@ -3363,7 +3405,7 @@
  	if (!selected_rtpp_set_2 || selected_rtpp_set_2 == selected_rtpp_set_1)
  		more = 0;
  
@@ -129,7 +129,7 @@
  	if (ret < 0)
  		return ret;
  
-@@ -3365,17 +3407,18 @@
+@@ -3374,17 +3416,18 @@
  	if (set_rtpengine_set_from_avp(msg, direction) == -1)
  		return -1;
  
@@ -152,7 +152,7 @@
  {
  	str flags;
  
-@@ -3387,27 +3430,23 @@
+@@ -3396,27 +3439,23 @@
  		}
  	}
  
@@ -189,7 +189,7 @@
  }
  
  
-@@ -3553,88 +3592,45 @@
+@@ -3562,88 +3601,45 @@
  	return -1;
  }
  
@@ -285,7 +285,7 @@
  }
  
  static int
-@@ -3708,160 +3704,102 @@
+@@ -3717,160 +3713,102 @@
  }
  
  
@@ -493,7 +493,7 @@
  	void **parms;
  	pv_param_t *param;
  	pv_value_t *res;
-@@ -3915,7 +3853,7 @@
+@@ -3924,7 +3862,7 @@
  	parms[0] = param;
  	parms[1] = res;
  
@@ -502,7 +502,7 @@
  }
  
  static int
-@@ -3940,54 +3878,55 @@
+@@ -3949,54 +3887,55 @@
   *
   */
  static int ki_rtpengine_manage0(sip_msg_t *msg) {
diff --git a/debian/patches/sipwise/rtpengine-tcp-forwarding.patch b/debian/patches/sipwise/rtpengine-tcp-forwarding.patch
index adad14b80..5f30973c7 100644
--- a/debian/patches/sipwise/rtpengine-tcp-forwarding.patch
+++ b/debian/patches/sipwise/rtpengine-tcp-forwarding.patch
@@ -55,7 +55,7 @@
  	{
  		if (ng_flags.directional)
  			bencode_dictionary_add_str(ng_flags.dict, "from-tag", &ng_flags.from_tag);
-@@ -3807,6 +3823,44 @@
+@@ -3816,6 +3832,44 @@
  	return rtpengine_rtpp_set_wrap(msg, rtpengine_unblock_media_wrap, flags.s, 1);
  }
  
diff --git a/debian/patches/sipwise/rtpengine-trickle-ice-sdp.patch b/debian/patches/sipwise/rtpengine-trickle-ice-sdp.patch
index a85193a29..bc763ee81 100644
--- a/debian/patches/sipwise/rtpengine-trickle-ice-sdp.patch
+++ b/debian/patches/sipwise/rtpengine-trickle-ice-sdp.patch
@@ -91,7 +91,7 @@
  		goto select_node;
  	}
  
-@@ -3546,6 +3557,26 @@
+@@ -3555,6 +3566,26 @@
  	return rtpengine_rtpp_set_wrap(msg, rtpengine_manage_wrap, flags.s, 1);
  }
  
diff --git a/debian/patches/sipwise/rtpengine_next_branch_parm.patch b/debian/patches/sipwise/rtpengine_next_branch_parm.patch
index b1881ea42..fc7aae9be 100644
--- a/debian/patches/sipwise/rtpengine_next_branch_parm.patch
+++ b/debian/patches/sipwise/rtpengine_next_branch_parm.patch
@@ -72,7 +72,7 @@
  		if (ret == -1 || viabranch.len == 0) {
  			LM_ERR("can't get Via branch/extra ID\n");
  			goto error;
-@@ -3545,7 +3568,7 @@ rtpengine_answer1_f(struct sip_msg *msg,
+@@ -3554,7 +3577,7 @@ rtpengine_answer1_f(struct sip_msg *msg,
  }
  
  static int
diff --git a/debian/patches/sipwise/rtpengine_play_dtmf.patch b/debian/patches/sipwise/rtpengine_play_dtmf.patch
index 3306c26e8..f5a576132 100644
--- a/debian/patches/sipwise/rtpengine_play_dtmf.patch
+++ b/debian/patches/sipwise/rtpengine_play_dtmf.patch
@@ -26,7 +26,7 @@
  	{"rtpengine_offer",	(cmd_function)rtpengine_offer1_f,	0,
  		0, 0,
  		ANY_ROUTE},
-@@ -3788,6 +3793,12 @@
+@@ -3797,6 +3802,12 @@
  }
  
  static int
diff --git a/debian/patches/sipwise/switch_from_python2_to_python3.patch b/debian/patches/sipwise/switch_from_python2_to_python3.patch
deleted file mode 100644
index f727f554c..000000000
--- a/debian/patches/sipwise/switch_from_python2_to_python3.patch
+++ /dev/null
@@ -1,86 +0,0 @@
---- a/utils/kamctl/dbtextdb/__init__.py
-+++ b/utils/kamctl/dbtextdb/__init__.py
-@@ -1,4 +1,4 @@
--#!/usr/bin/python
-+#!/usr/bin/python3
- #
- # Copyright 2008 Google Inc. All Rights Reserved.
- 
---- a/utils/kamctl/dbtextdb/dbtextdb.py
-+++ b/utils/kamctl/dbtextdb/dbtextdb.py
-@@ -1,4 +1,4 @@
--#!/usr/bin/python
-+#!/usr/bin/python3
- #
- # Copyright 2008 Google Inc. All Rights Reserved.
- 
-@@ -27,7 +27,7 @@ else:
- def Debug(msg):
-   """Debug print method."""
-   if DEBUG:
--    print msg
-+    print(msg)
- 
- 
- class DBText(object):
-@@ -958,11 +958,11 @@ class DBText(object):
-       try:
-         if val:
-           val = eval(val)
--      except NameError, e:
-+      except NameError as e:
-         raise ExecuteError('Failed to parse %s in %s '
-                            '(unable to convert to type %s): %s' %
-                            (col, self.table, self.header[col]['type'], e))
--      except SyntaxError, e:
-+      except SyntaxError as e:
-         raise ExecuteError('Failed to parse %s in %s '
-                            '(unable to convert to type %s): %s' %
-                            (col, self.table, self.header[col]['type'], e))
-@@ -1045,7 +1045,7 @@ class DBText(object):
-       self.data = self._GetData()
-       self.orig_data = self.data[:]  # save a copy of the data before modifying
- 
--    except IOError, e:
-+    except IOError as e:
-       raise ExecuteError('Unable to open table %s: %s' % (self.table, e))
- 
-     Debug('Header is: %s' % self.header)
-@@ -1172,11 +1172,11 @@ class ExecuteError(Error):
- def main(argv):
- 
-   if len(argv) < 2:
--    print 'Usage %s query' % argv[0]
-+    print('Usage %s query' % argv[0])
-     sys.exit(1)
- 
-   if 'DBTEXT_PATH' not in os.environ or not os.environ['DBTEXT_PATH']:
--    print 'DBTEXT_PATH must be set'
-+    print('DBTEXT_PATH must be set')
-     sys.exit(1)
-   else:
-     location = os.environ['DBTEXT_PATH']
-@@ -1187,11 +1187,11 @@ def main(argv):
-     if dataset:
-       for row in dataset:
-         if conn.command != 'SELECT':
--          print 'Updated %s, rows affected: %d' % (conn.table, row)
-+          print('Updated %s, rows affected: %d' % (conn.table, row))
-         else:
--          print row
--  except Error, e:
--    print e
-+          print(row)
-+  except Error as e:
-+    print(e)
-     sys.exit(1)
- 
- 
---- a/utils/kamctl/dbtextdb/dbtextdb_test.py
-+++ b/utils/kamctl/dbtextdb/dbtextdb_test.py
-@@ -1,4 +1,4 @@
--#!/usr/bin/python
-+#!/usr/bin/python3
- #
- # Copyright 2008 Google Inc. All Rights Reserved.
- 
diff --git a/debian/rules b/debian/rules
index a07746b5c..f8ba52676 100755
--- a/debian/rules
+++ b/debian/rules
@@ -121,6 +121,10 @@ LD_EXTRA_OPTS := $(shell dpkg-buildflags --get LDFLAGS)
 # https://wiki.debian.org/ReproducibleBuilds/
 CC_EXTRA_OPTS += -DVERSION_NODATE
 
+# Fix for UDP buffer issue when TLS is enabled
+CC_EXTRA_OPTS += -pthread -DKSR_PTHREAD_MUTEX_SHARED
+LD_EXTRA_OPTS += -pthread -rdynamic -ldl -Wl,-Bsymbolic-functions
+
 %:
 	dh $@