Following the upgrades over the weekend we have identified an issue with PPPoE/LCP negotiation which affects Sonicwall routers.
Firebrick have released a firmware update which overcomes this issue, and we intend to roll the firmware update out to the primary LNS Wednesday evening during the usual mid week maintenance window.
The actual upgrades will happen at 00:05 Thursday morning and should result in a brief disconnect and reconnect for users.