重要的歷史時刻來臨:IPv4 開始收費了!
地址空間
標頭字段數(shù)量較少(僅占為 8 個,IPv4 上是 13 個)
處理速度更快:不再需要校驗和,所以路由器不必對每個數(shù)據包進行重新計算。
路由速度更快:包含更多匯總路由和分層路由。(看不懂?沒關系,匯總路由 = 將多個 IP 組合起來,這樣就不需要處理所有地址,而僅僅只要根據地址開頭部分的大致方向前進就行。路由也是如此,畢竟 IPv6 是我們唯一能夠使用的小型、高效主干路由。)
QoS:Traffic Class 和 Flow Label 兩個字段,讓 QoS 更輕松。
自動尋址。允許 IPv6 主機在局域網上無需路由器或 DHCP 服務器即可實現(xiàn)連接。
可以使用 Authentication 標頭和封裝安全負載將 IPsec 添加至 IPv6。
curl -v https://s3.amazonaws.com/dd-agent/scripts/install_script_agent7.sh* Trying [64:ff9b::34d9:8430]:443...* Trying 52.216.133.245:443...* Immediate connect fail for 52.216.133.245: Network is unreachable* Trying 54.231.138.48:443...* Immediate connect fail for 54.231.138.48: Network is unreachable* Trying 52.217.96.222:443...* Immediate connect fail for 52.217.96.222: Network is unreachable* Trying 52.216.152.62:443...* Immediate connect fail for 52.216.152.62: Network is unreachable* Trying 54.231.229.16:443...* Immediate connect fail for 54.231.229.16: Network is unreachable* Trying 52.216.210.200:443...* Immediate connect fail for 52.216.210.200: Network is unreachable* Trying 52.217.89.94:443...* Immediate connect fail for 52.217.89.94: Network is unreachable* Trying 52.216.205.173:443...* Immediate connect fail for 52.216.205.173: Network is unreachable
curl -v http://s3.dualstack.us-west-2.amazonaws.com/* Trying [2600:1fa0:40bf:a809:345c:d3f8::]:80...* Connected to s3.dualstack.us-west-2.amazonaws.com (2600:1fa0:40bf:a809:345c:d3f8::) port 80 (#0)> GET / HTTP/1.1> Host: s3.dualstack.us-west-2.amazonaws.com> User-Agent: curl/7.88.1> Accept: */*>< HTTP/1.1 307 Temporary Redirect< x-amz-id-2: r1WAG/NYpaggrPl3Oja4SG1CrcBZ+1RIpYKivAiIhiICtfwiItTgLfm6McPXXJpKWeM848YWvOQ=< x-amz-request-id: BPCVA8T6SZMTB3EF< Date: Tue, 01 Aug 2023 10:31:27 GMT< Location: https://aws.amazon.com/s3/< Server: AmazonS3< Content-Length: 0<* Connection #0 to host s3.dualstack.us-west-2.amazonaws.com left intact
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連接請求輪詢。
不同服務器的加權輪詢。
最少連接原則,即連接數(shù)最少的服務器會收到更多請求。
加權最少連接,跟上一條類似,但也可以設置更多傾向性。
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