DOTS client        DOTS servers
                       +---+
            -----------| S |
           /           +---+
          /            dots1.example.net
         /
   +---+/              +---+
   | c |---------------| S |
   +---+\              +---+
         \             dots.example.org
          \
           \           +---+
            -----------| S |
                       +---+
   c.example.com       dots2.example.net