Monthly Archives: April 2014

LON01 – BGP Route HiJack – 20:40 – 02/04/2014 *RESOLVED*

We have been alerted to a RPKI Validation failure on both our /21 IP ranges. This notice advises that our IP space is now being miss announced by AS4761 (INDOSAT-INP-AP INDOSAT Internet Network Provider,ID) and has been accepted by some of their upstream peers who do not filter there BGP sessions correctly.

We are working with our upstream providers to limit any routing issues that may be seen and will provide updates shortly.

UPDATE 01 – 21:00 – 02/04/2014

Our Chief Engineer (Adam Clark) has been dealing with the situation and can advise this is a wide spread issue affecting many thousands of networks and is a repeat of the INDOSAT issue seen in 2011. Since then many providers now filter results from INDOSAT and the RIPE RPKI validation being in use, this has limited the acceptance of our hijacked ranges. An email has also gone off to the INDOSAT contact who manages the network. We are awaiting a response.

At the moment no UK provider has accepted the wrong announcement and we are not seeing any UK related issues, however as many thousands of other networks are caught up in this you many experience problems connecting to the effected networks.

UPDATE 02 – 21:15 – 02/04/2014

We can now advise the only upstream provider of INDOSAT who accepted the announcement was AS4651 (THAI-GATEWAY The Communications Authority of Thailand(CAT),TH) Our upstream providers directly peer with AS4651 and therefore filtered the incorrect data.
As no further repeat alerts have been seen we are happy this has been resolved by INDOSAT although no official response has been given by them.
Should a repeat occur then this NOC notice will be reopened.