diff --git a/birdvisu/providers.py b/birdvisu/providers.py
index 8a02927..0b786b9 100644
--- a/birdvisu/providers.py
+++ b/birdvisu/providers.py
@@ -153,15 +153,16 @@ class OspfFileTopologyParser:
 		# already be created, so the only issue is resolving the correct
 		# VertexIDs for the networks.
 		# Since these are networks, the process is generally different for each version of OSPF
-		if self.version is None:
-			# TODO: logger?
-			print('WARNING: At this point the OSPF version should have been guessed!')
-			# We need some sort of directive for this. We make one up.
-			directive = 'network ' + self.future_transit_networks_edges[0][1]
-			self.guess_version(directive)
-		if self.version == 2: return self.add_transit_network_edges_ospfv2(result)
-		if self.version == 3: return self.add_transit_network_edges_ospfv3(result)
-		raise RuntimeError('Bug? Unreachable point of code.')
+		if len(self.future_transit_networks_edges) > 0:
+			if self.version is None:
+				# TODO: logger?
+				print('WARNING: At this point the OSPF version should have been guessed!')
+				# We need some sort of directive for this. We make one up.
+				directive = 'network ' + self.future_transit_networks_edges[0][1]
+				self.guess_version(directive)
+			if self.version == 2: return self.add_transit_network_edges_ospfv2(result)
+			if self.version == 3: return self.add_transit_network_edges_ospfv3(result)
+			raise RuntimeError('Bug? Unreachable point of code.')
 
 	def add_transit_network_edges_ospfv2(self, result):
 		for src, tgt, cost, count in self.future_transit_networks_edges:
@@ -192,6 +193,7 @@ class OspfFileTopologyParser:
 			# determine the network. (We are dealing with a single topology, so
 			# it must match.)
 			dr_id, discr = tgt.lstrip(r'[').rstrip(']').split('-')
+			dr_id = self.parse_fake_ip(dr_id)
 			candidates = list(filter(lambda vid: vid.dr_id == dr_id and vid.discriminator == discr, result.vertices))
 			if len(candidates) != 1: raise OspfFileParseError(f'Multiple or no candidates for uniquely determined network {tgt}')
 			tgtid = candidates[0]
@@ -226,7 +228,7 @@ class OspfFileTopologyParser:
 			# moment this will crash and only then will we implement that
 			# feature. (We could guess the format right away, but that would
 			# only be a guess.)
-			tag, router = line.split
+			tag, router = line.split()
 			rid = self.parse_fake_ip(router)
 			peer_id = VertexID(family=None, address=None, is_router=True, router_id=rid, dr_id=None, discriminator=None)
 			future_edges[peer_id] += 1
@@ -323,12 +325,12 @@ class OspfFileTopologyParser:
 		if tag != 'network': raise RuntimeError('Bug? Guessing from a non-network. (No tasseography here.)')
 		# For OSPFv2, networks can be identified by DR RID on l3, but it will
 		# not contain iface ID. (Ref: BIRD source @ ecbae010 proto/ospf/ospf.c:1084)
-		self.version = 3 if ident.contains(r'-') else 2
+		self.version = 3 if r'-' in ident else 2
 	
 	def get_vertex_for_l2_network_ospfv3(self, directive, details):
 		_tag, ident = directive.split()
 		# In OSPFv3, the ID is always '[DRID-iface]'
-		dr, discr = directive.rstrip(r'[').rstrip(r']').split(r'-')
+		dr, discr = ident.lstrip(r'[').rstrip(r']').split(r'-')
 		dr = self.parse_fake_ip(dr)
 		addresses = []
 		for line, chld in details: