diff --git a/RNS/Interfaces/Interface.py b/RNS/Interfaces/Interface.py
index 2539284..05c5e62 100755
--- a/RNS/Interfaces/Interface.py
+++ b/RNS/Interfaces/Interface.py
@@ -34,6 +34,8 @@ class Interface:
     MODE_FULL           = 0x01
     MODE_POINT_TO_POINT = 0x02
     MODE_ACCESS_POINT   = 0x03
+    MODE_ROAMING        = 0x04
+    MODE_BOUNDARY       = 0x05
 
     def __init__(self):
         self.rxb = 0
diff --git a/RNS/Reticulum.py b/RNS/Reticulum.py
index 6176bce..fe7a4a7 100755
--- a/RNS/Reticulum.py
+++ b/RNS/Reticulum.py
@@ -343,20 +343,30 @@ class Reticulum:
                     interface_mode = Interface.Interface.MODE_FULL
                     
                     if "interface_mode" in c:
+                        c["interface_mode"] = str(c["interface_mode"]).lower()
                         if c["interface_mode"] == "full":
                             interface_mode = Interface.Interface.MODE_FULL
                         elif c["interface_mode"] == "access_point" or c["interface_mode"] == "accesspoint" or c["interface_mode"] == "ap":
                             interface_mode = Interface.Interface.MODE_ACCESS_POINT
                         elif c["interface_mode"] == "pointtopoint" or c["interface_mode"] == "ptp":
                             interface_mode = Interface.Interface.MODE_POINT_TO_POINT
+                        elif c["interface_mode"] == "roaming":
+                            interface_mode = Interface.Interface.MODE_ROAMING
+                        elif c["interface_mode"] == "boundary":
+                            interface_mode = Interface.Interface.MODE_BOUNDARY
 
                     elif "mode" in c:
+                        c["mode"] = str(c["mode"]).lower()
                         if c["mode"] == "full":
                             interface_mode = Interface.Interface.MODE_FULL
                         elif c["mode"] == "access_point" or c["mode"] == "accesspoint" or c["mode"] == "ap":
                             interface_mode = Interface.Interface.MODE_ACCESS_POINT
                         elif c["mode"] == "pointtopoint" or c["mode"] == "ptp":
                             interface_mode = Interface.Interface.MODE_POINT_TO_POINT
+                        elif c["mode"] == "roaming":
+                            interface_mode = Interface.Interface.MODE_ROAMING
+                        elif c["mode"] == "boundary":
+                            interface_mode = Interface.Interface.MODE_BOUNDARY
 
                     ifac_size = None
                     if "ifac_size" in c:
diff --git a/RNS/Transport.py b/RNS/Transport.py
index 95f8fca..8e7d3f9 100755
--- a/RNS/Transport.py
+++ b/RNS/Transport.py
@@ -53,11 +53,12 @@ class Transport:
     Maximum amount of hops that Reticulum will transport a packet.
     """
     
-    PATHFINDER_R    = 1          # Retransmit retries
-    PATHFINDER_G    = 5          # Retry grace period
-    PATHFINDER_RW   = 0.5        # Random window for announce rebroadcast
-    PATHFINDER_E    = 60*60*24*7 # Path expiration of one week
-    AP_PATH_TIME    = 60*60*24   # Path expiration of one day for Access Point paths
+    PATHFINDER_R      = 1          # Retransmit retries
+    PATHFINDER_G      = 5          # Retry grace period
+    PATHFINDER_RW     = 0.5        # Random window for announce rebroadcast
+    PATHFINDER_E      = 60*60*24*7 # Path expiration of one week
+    AP_PATH_TIME      = 60*60*24   # Path expiration of one day for Access Point paths
+    ROAMING_PATH_TIME = 60*60*6    # Path expiration of 6 hours for Roaming paths
 
     # TODO: Calculate an optimal number for this in
     # various situations
@@ -575,7 +576,30 @@ class Transport:
                             if interface.mode == RNS.Interfaces.Interface.Interface.MODE_ACCESS_POINT:
                                 RNS.log("Blocking announce broadcast on "+str(interface)+" due to AP mode", RNS.LOG_EXTREME)
                                 should_transmit = False
-                            
+
+                            elif interface.mode == RNS.Interfaces.Interface.Interface.MODE_ROAMING:
+                                from_interface = Transport.next_hop_interface(packet.destination_hash)
+                                if from_interface == None or not hasattr(from_interface, "mode"):
+                                    RNS.log("Blocking announce broadcast on "+str(interface)+" since next hop interface is non-existing or has no mode configured", RNS.LOG_EXTREME)
+                                    should_transmit = False
+                                else:
+                                    if from_interface.mode == RNS.Interfaces.Interface.Interface.MODE_ROAMING:
+                                        RNS.log("Blocking announce broadcast on "+str(interface)+" due to roaming-mode next-hop interface", RNS.LOG_EXTREME)
+                                        should_transmit = False
+                                    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", RNS.LOG_EXTREME)
+                                        should_transmit = False
+
+                            elif interface.mode == RNS.Interfaces.Interface.Interface.MODE_BOUNDARY:
+                                from_interface = Transport.next_hop_interface(packet.destination_hash)
+                                if from_interface == None or not hasattr(from_interface, "mode"):
+                                    RNS.log("Blocking announce broadcast on "+str(interface)+" since next hop interface is non-existing or has no mode configured", RNS.LOG_EXTREME)
+                                    should_transmit = False
+                                else:
+                                    if from_interface.mode == RNS.Interfaces.Interface.Interface.MODE_ROAMING:
+                                        RNS.log("Blocking announce broadcast on "+str(interface)+" due to roaming-mode next-hop interface", RNS.LOG_EXTREME)
+                                        should_transmit = False
+
                             else:
                                 # Currently, annouces originating locally are always
                                 # allowed, and do not conform to bandwidth caps.
@@ -1080,6 +1104,8 @@ class Transport:
 
                             if packet.receiving_interface.mode == RNS.Interfaces.Interface.Interface.MODE_ACCESS_POINT:
                                 expires            = now + Transport.AP_PATH_TIME
+                            elif packet.receiving_interface.mode == RNS.Interfaces.Interface.Interface.MODE_ROAMING:
+                                expires            = now + Transport.ROAMING_PATH_TIME
                             else:
                                 expires            = now + Transport.PATHFINDER_E
                             
diff --git a/RNS/Utilities/rnstatus.py b/RNS/Utilities/rnstatus.py
index b9492b9..e7e5b3c 100644
--- a/RNS/Utilities/rnstatus.py
+++ b/RNS/Utilities/rnstatus.py
@@ -71,6 +71,10 @@ def program_setup(configdir, dispall=False, verbosity = 0):
                     modestr = "Access Point"
                 elif ifstat["mode"] == RNS.Interfaces.Interface.Interface.MODE_POINT_TO_POINT:
                     modestr = "Point-to-Point"
+                elif ifstat["mode"] == RNS.Interfaces.Interface.Interface.MODE_ROAMING:
+                    modestr = "Roaming"
+                elif ifstat["mode"] == RNS.Interfaces.Interface.Interface.MODE_BOUNDARY:
+                    modestr = "Boundary"
                 else:
                     modestr = "Full"
 
diff --git a/RNS/_version.py b/RNS/_version.py
index a8d4557..d7b30e1 100644
--- a/RNS/_version.py
+++ b/RNS/_version.py
@@ -1 +1 @@
-__version__ = "0.3.5"
+__version__ = "0.3.6"