Berapa banyak alamat dalam IPv6 anda?

Beberapa komentar yang masuk pada review saya soal NAT VPS menandakan bahwa produk jenis ini masihlah asing. Apalagi dalam spesifikasi VPSnya yang tertulis memang bukan ditujukan untuk orang yang awam tapi banyak yang terjebak karena harganya yang sangat murah. Ciri – ciri paling utamanya adalah kita akan mendapatkan shared IPv4 atau tidak sama sekali dan yang pasti akan diberi satu blok alamat IPv6 yang dedicated. Tinggal kita bisa pakainya atau tidak.

Dalam pengalamatan IPv6 yang diberikan sendiri kita akan menemukan kode – kode seperti /96, /108, atau bahkan /64 dan seterusnya. Ini fungsinya apa?

Angka – angka yang diawali garis miring itu dalam Linux adalah subnet dari alamat IP dan menandakan berapa jarak alamat IP yang valid digunakan dalam VPS anda.

Saya bukan ahli jaringan jadi daripada salah kalau maksa menjelaskan akan saya berikan tabel berapa banyak alamat _/angka_subnet_ dalam IPv6.

Subnet CIDR IPv6
Banyaknya alamat IP
/1281
/1272
/1264
/1258
/12416
/12332
/12264
/121128
/120256
/119512
/1181.024
/1172.048
/1164.096
/1158.192
/11416.384
/11332.768
/11265.536
/111131.072
/110262.144
/109524.288
/1081.048.576
/1072.097.152
/1064.194.304
/1058.388.608
/10416.777.216
/10333.554.432
/10267.108.864
/101134.217.728
/100268.435.456
/99536.870.912
/981.073.741.824
/972.147.483.648
/964.294.967.296
/958.589.934.592
/9417.179.869.184
/9334.359.738.368
/9268.719.476.736
/91137.438.953.472
/90274.877.906.944
/89549.755.813.888
/881.099.511.627.776
/872.199.023.255.552
/864.398.046.511.104
/858.796.093.022.208
/8417.592.186.044.416
/8335.184.372.088.832
/8270.368.744.177.664
/81140.737.488.355.328
/80281.474.976.710.656
/79562.949.953.421.312
/781.125.899.906.842.624
/772.251.799.813.685.248
/764.503.599.627.370.496
/759.007.199.254.740.992
/7418.014.398.509.481.985
/7336.028.797.018.963.968
/7272.057.594.037.927.936
/71144.115.188.075.855.872
/70288.230.376.151.711.744
/69576.460.752.303.423.488
/681.152.921.504.606.846.976
/672.305.843.009.213.693.952
/664.611.686.018.427.387.904
/659.223.372.036.854.775.808
/6418.446.744.073.709.551.616
/6336.893.488.147.419.103.232
/6273.786.976.294.838.206.464
/61147.573.952.589.676.412.928
/60295.147.905.179.352.825.856
/59590.295.810.358.705.651.712
/581.180.591.620.717.411.303.424
/572.361.183.241.434.822.606.848
/564.722.366.482.869.645.213.696
/559.444.732.965.739.290.427.392
/5418.889.465.931.478.580.854.784
/5337.778.931.862.957.161.709.568
/5275.557.863.725.914.323.419.136
/51151.115.727.451.828.646.838.272
/50302.231.454.903.657.293.676.544
/49604.462.909.807.314.587.353.088
/481.208.925.819.614.629.174.706.176
/472.417.851.639.229.258.349.412.352
/464.835.703.278.458.516.698.824.704
/459.671.406.556.917.033.397.649.408
/4419.342.813.113.834.066.795.298.816
/4338.685.626.227.668.133.590.597.632
/4277.371.252.455.336.267.181.195.264
/41154.742.504.910.672.534.362.390.528
/40309.485.009.821.345.068.724.781.056
/39618.970.019.642.690.137.449.562.112
/381.237.940.039.285.380.274.899.124.224
/372.475.880.078.570.760.549.798.248.448
/364.951.760.157.141.521.099.596.496.896
/359.903.520.314.283.042.199.192.993.792
/3419.807.040.628.566.084.398.385.987.584
/3339.614.081.257.132.168.796.771.975.168
/3279.228.162.514.264.337.593.543.950.336
/31158.456.325.028.528.675.187.087.900.672
/30316.912.650.057.057.350.374.175.801.344
/29633.825.300.114.114.700.748.351.602.688
/281.267.650.600.228.229.401.496.703.205.376
/272.535.301.200.456.458.802.993.406.410.752
/265.070.602.400.912.917.605.986.812.821.504
/2510.141.204.801.825.835.211.973.625.643.008
/2420.282.409.603.651.670.423.947.251.286.016
/2340.564.819.207.303.340.847.894.502.572.032
/2281.129.638.414.606.681.695.789.005.144.064
/21162.259.276.829.213.363.391.578.010.288.128
/20324.518.553.658.426.726.783.156.020.576.256
/19649.037.107.316.853.453.566.312.041.152.512
/181.298.074.214.633.706.907.132.624.082.305.024
/172.596.148.429.267.413.814.265.248.164.610.048
/165.192.296.858.534.827.628.530.496.329.220.096
/1510.384.593.717.069.655.257.060.992.658.440.192
/1420.769.187.434.139.310.514.121.985.316.880.384
/1341.538.374.868.278.621.028.243.970.633.760.768
/1283.076.749.736.557.242.056.487.941.267.521.536
/11166.153.499.473.114.484.112.975.882.535.043.072
/10332.306.998.946.228.968.225.951.765.070.086.144
/9664.613.997.892.457.936.451.903.530.140.172.288
/81.329.227.995.784.915.872.903.807.060.280.344.576

Bisa anda lihat dibandingkan mendapatkan 1 alamat IPv4 yang umum dalam sewa VPS maka pengalamatan pada IPv6 lebih dermawan lagi banyaknya. Padahal cukup sering saya cuma menggunakan satu saja, sisanya menganggur.

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