DFDS don't offer a shuttle bus service to the terminal, but passengers can take the local bus from Jernbanetorget, this 5 minute journey will take you almost directly to the terminal.
To purchase bus tickets, either download the app RuterBillett or use the machines located in the metro stations or Narvesen. It is also possible to buy tickets onboard the bus, but please note that it is cash only.
Akershusstranda 31, Skur 42 (Vippetangen) 0150 Oslo
The bus stop required is called Jernbanetorget – Foran Oslo S and the route number needed is 60 Vippetangen.
Get off at the final stop called Vippetangen, and from there it is only a few metres to the terminal building.