Router-A: 2001:DB8::1/128, Prefix-SID: Index 1
          Router-B: 2001:DB8::2/128, Prefix-SID: Index 2
          Router-C: 2001:DB8::3/128, Prefix-SID: Index 3
          Router-D: 2001:DB8::4/128, Prefix-SID: Index 4