diff --git a/libi2pd/NetDb.cpp b/libi2pd/NetDb.cpp
index 8cdbc9bd..89d24b79 100644
--- a/libi2pd/NetDb.cpp
+++ b/libi2pd/NetDb.cpp
@@ -1155,7 +1155,7 @@ namespace data
 						router->IsReachableFrom (*compatibleWith)) && !router->IsNAT2NATOnly (*compatibleWith) &&
 					router->GetVersion () >= NETDB_MIN_ALLOWED_VERSION &&
 					router->IsECIES () && !router->IsHighCongestion (clientTunnel) &&
-					(!i2p::transport::transports.IsCheckReserved () || !router->IsSameSubnet (*compatibleWith)) &&
+					(!i2p::transport::transports.IsCheckReserved () || (!router->IsSameFamily (*compatibleWith) && !router->IsSameSubnet (*compatibleWith))) &&
 					(!checkIsReal || router->GetProfile ()->IsReal ()) &&
 					(!endpoint || (router->IsV4 () && (!reverse || router->IsPublished (true)))); // endpoint must be ipv4 and published if inbound(reverse)
 			});
@@ -1195,7 +1195,7 @@ namespace data
 					(router->GetCaps () & RouterInfo::eHighBandwidth) &&
 					router->GetVersion () >= NETDB_MIN_HIGHBANDWIDTH_VERSION &&
 					router->IsECIES () && !router->IsHighCongestion (true) &&
-					(!i2p::transport::transports.IsCheckReserved () || !router->IsSameSubnet (*compatibleWith)) &&
+					(!i2p::transport::transports.IsCheckReserved () || (!router->IsSameFamily (*compatibleWith) && !router->IsSameSubnet (*compatibleWith))) &&
 					(!checkIsReal || router->GetProfile ()->IsReal ()) &&
 					(!endpoint || (router->IsV4 () && (!reverse || router->IsPublished (true)))); // endpoint must be ipv4 and published if inbound(reverse)
 
diff --git a/libi2pd/RouterInfo.cpp b/libi2pd/RouterInfo.cpp
index 23070fda..f3c9aea3 100644
--- a/libi2pd/RouterInfo.cpp
+++ b/libi2pd/RouterInfo.cpp
@@ -511,11 +511,6 @@ namespace data
 		return true;
 	}
 
-	bool RouterInfo::IsFamily (FamilyID famid) const
-	{
-		return m_FamilyID == famid;
-	}
-
 	void RouterInfo::ExtractCaps (std::string_view value)
 	{
 		for (auto cap: value)
diff --git a/libi2pd/RouterInfo.h b/libi2pd/RouterInfo.h
index bb3300a8..be9cbcce 100644
--- a/libi2pd/RouterInfo.h
+++ b/libi2pd/RouterInfo.h
@@ -322,7 +322,8 @@ namespace data
 			bool IsNewer (const uint8_t * buf, size_t len) const;
 
 			/** return true if we are in a router family and the signature is valid */
-			bool IsFamily (FamilyID famid) const;
+			bool IsFamily (FamilyID famid) const { return m_FamilyID && m_FamilyID == famid; };
+			bool IsSameFamily (const RouterInfo& other) const { return IsFamily (other.m_FamilyID); };
 
 			// implements RoutingDestination
 			std::shared_ptr<const IdentityEx> GetIdentity () const { return m_RouterIdentity; };