In most cases, no.

Basic, client DSL has IP addresses assigned using Dynamic Host Configuration Protocol (DHCP). With DHCP, IP addresses are assigned out of a pool of available addresses. Thus you may get a different IP address every time you connect.

For most people, this is the preferred approach, because it is invisible to you and requires no special set-up on your end.

However, in a few cases people or companies might require a static IP address. In those cases, server-enabled DSL will be required. For pricing of server-enabled DSL, check the "The cost of StarNet server/commercial DSL" section under Pricing and Billing.