allow some unreachable floodfills

libi2pd/RouterInfo.cpp

@@ -1069,8 +1069,9 @@ namespace data
 
 	bool RouterInfo::IsEligibleFloodfill () const 
 	{
-		// floodfill must be reachable, >= 0.9.28 and not DSA
+		// floodfill must be reachable somehow, >= 0.9.28 and not DSA
-		return IsReachable () && m_Version >= NETDB_MIN_FLOODFILL_VERSION &&
+		return (IsReachable () || (m_SupportedTransports & eSSUV4)) && 
+			m_Version >= NETDB_MIN_FLOODFILL_VERSION &&
 			GetIdentity ()->GetSigningKeyType () != SIGNING_KEY_TYPE_DSA_SHA1; 
 	}