D.C. Code § 1-1061.05: Overseas voter’s registration address.

In registering to vote, an overseas voter who is eligible to vote in the District must be assigned to the voting precinct of the address of the last place of residence of the voter in the District, or, in the case of a voter described by § 1-1061.02(2)(E), the address of the last place of residence in the District of the parent or legal guardian of the voter. If that address is no longer a recognized residential address, the voter must be assigned an address for voting purposes.