diff --git a/RNS/Interfaces/Interface.py b/RNS/Interfaces/Interface.py
index 6b1437c5..34f22851 100755
--- a/RNS/Interfaces/Interface.py
+++ b/RNS/Interfaces/Interface.py
@@ -111,6 +111,7 @@ class Interface:
         self.bootstrap_only           = False
         self.recursive_prs            = False
         self.announces_from_internal  = True
+        self.announces_to_internal    = None
         self.parent_interface         = None
         self.spawned_interfaces       = None
         self.tunnel_id                = None
diff --git a/RNS/Reticulum.py b/RNS/Reticulum.py
index 1681e44a..d3b346d0 100755
--- a/RNS/Reticulum.py
+++ b/RNS/Reticulum.py
@@ -811,6 +811,9 @@ class Reticulum:
         announces_from_internal = True
         if "announces_from_internal" in c: announces_from_internal = c.as_bool("announces_from_internal")
 
+        announces_to_internal = None
+        if "announces_to_internal" in c: announces_to_internal = c.as_bool("announces_to_internal")
+
         ignore_config_warnings = False
         if "ignore_config_warnings" in c: ignore_config_warnings = c.as_bool("ignore_config_warnings")
 
@@ -896,6 +899,7 @@ class Reticulum:
 
                     interface.recursive_prs                   = recursive_prs
                     interface.announces_from_internal         = announces_from_internal
+                    interface.announces_to_internal           = announces_to_internal
                     interface.announce_rate_target            = announce_rate_target
                     interface.announce_rate_grace             = announce_rate_grace
                     interface.announce_rate_penalty           = announce_rate_penalty
@@ -1052,7 +1056,7 @@ class Reticulum:
 
     def _add_interface(self, interface, mode = None, configured_bitrate=None, ifac_size=None, ifac_netname=None, ifac_netkey=None,
                        announce_cap=None, announce_rate_target=None, announce_rate_grace=None, announce_rate_penalty=None,
-                       bootstrap_only=False, recursive_prs=False, announces_from_internal=True):
+                       bootstrap_only=False, recursive_prs=False, announces_from_internal=True, announces_to_internal=None):
 
         if not self.is_connected_to_shared_instance:
             if interface != None and issubclass(type(interface), RNS.Interfaces.Interface.Interface):
@@ -1070,6 +1074,7 @@ class Reticulum:
 
                 interface.recursive_prs           = recursive_prs
                 interface.announces_from_internal = announces_from_internal
+                interface.announces_to_internal   = announces_to_internal
                 interface.announce_cap            = announce_cap if announce_cap != None else Reticulum.ANNOUNCE_CAP/100.0
                 interface.announce_rate_target    = announce_rate_target
                 interface.announce_rate_grace     = announce_rate_grace
diff --git a/RNS/Transport.py b/RNS/Transport.py
index 7270934c..ff0121b0 100755
--- a/RNS/Transport.py
+++ b/RNS/Transport.py
@@ -1233,7 +1233,8 @@ class Transport:
                                     should_transmit = False
                                     RNS.log("Blocking announce broadcast on "+str(interface)+" since next hop interface has no mode configured", ac_loglevel) if RNS.sl(ac_loglevel) else None
                                 else:
-                                    if from_interface.mode == RNS.Interfaces.Interface.Interface.MODE_BOUNDARY:
+                                    if from_interface.announces_to_internal == True: pass
+                                    elif from_interface.mode == RNS.Interfaces.Interface.Interface.MODE_BOUNDARY:
                                         RNS.log("Blocking announce broadcast on "+str(interface)+" due to boundary-mode next-hop interface", ac_loglevel) if RNS.sl(ac_loglevel) else None
                                         should_transmit = False
 
diff --git a/docs/source/interfaces.rst b/docs/source/interfaces.rst
index d884dad3..46c0875d 100644
--- a/docs/source/interfaces.rst
+++ b/docs/source/interfaces.rst
@@ -1274,6 +1274,11 @@ These can be used to control various aspects of interface behaviour.
      ``internal`` mode interfaces may still be resolvable by means
      of path requests.
 
+
+ * | To allow an interface that would *otherwise not* propagate
+     announces to ``internal`` mode interfaces to do so, you can
+     configure the ``announces_to_internal`` option to ``True``.
+
 .. _interfaces-modes:
 
 Interface Modes