One of our routers is misbehaving - the one we planned to reload shortly as it happens, and this seems to be impacting mobile data SIMs.
This appears to be a LINX issue
We have managed to shut down the port to LINX while this is resolved.
This looks to be impacting lots of ISPs, but traffic will go via alternative peering and transit whilst LINX have issues and so this should have minimal impact on customers at present.
LINX are clearly having some major issues on one of the LANs, and we remain disconnected until this is resolved. Once it is resolved, we may reload one of our routers so as to add more logging and allow us to more carefully monitor further issues.
LINX have rectified the issue, so we will be re-enabling LINX ports shortly.
All working now.