程序员可以通过简单地调用方法 sun.net.util.IPAddressUtil.isIPv6LiteralAddress() 来验证一个 String 类型的输入是否是一个合法的 IPv6 网络地址。 为了更深入一步地了解 IPv6 的网络地址规范,及其验证算法,笔者参阅了一些材料,包括上文所述的方法 sun.net.util.IPAddressUtil.isIPv6LiteralAddress() 的源代码,...
For details, see IPv4 Packet Format and IPv6 Packet Format. Packet Example Figure 3-86 IPv6 in IPv4 (6to4) Packet Frame 1: 134 bytes on wire (1072 bits), 134 bytes captured (1072 bits) Arrival Time: Jun 24, 2008 19:59:07.487397000 Epoch Time: 1214308747.487397000 seconds [Time delta...
IPv4-mapped IPv6 address: The format of an IPv4-mapped IPv6 address is 0:0:0:0:0:FFFF:IPv4-address. IPv4-mapped IPv6 addresses are used to represent IPv4 node addresses as IPv6 addresses. "X:X:X:X:X:X" represents the high-order six groups of digits, with each "X" standing for...
FormatDotted Decimal Notation:192.149.252.76Hexadecimal Notation:3FFE:F200:0234:AB00:0123:4567:8901:ABCDPrefix Notation192.149.0.0/243FFE:F200:0234::/48Number of Addresses232= ~4,294,967,2962128= ~340,282,366,920,938,463,463,374,607,431,768,211,456IPv4 and IPv6About ARINThe American ...
本文档介绍了IP业务的配置,具体包括IP地址配置、ARP配置、DHCP配置、DNS配置、mDNS网关配置、mDNS中继配置、UDP Helper配置、IP性能优化配置、IPv6基础配置、DHCPv6配置、IPv6 DNS配置、IPv6 over IPv4隧道配置和IPv4 over IPv6隧道配置。 IPv6 over IPv4隧道 ...
The address format of IPv4: The address format of IPv6: The above diagram shows the address format of IPv4 and IPv6. An IPv4 is a 32-bit decimal address. It contains 4 octets or fields separated by 'dot', and each field is 8-bit in size. The number that each field contains should...
IPv6: IPv4 字符串 《——》网络字节流 inet_pton、inet_ntop 程序代码: #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <arpa/inet.h> int main() { char ip[] = "192.168.0.74"; struct in_addr addr; int ret = inet_pton(AF_INET, ip, (void *)&addr)...
IPv6 addressing is straightforward and does not pose a problem for routers. With IPv6, CIDR is no longer essential, though you can still use it for router configuration.New packet formatMoreover, IPv6 has a new packet format that is designed to undergo minimal router processing. Thus, IPv6...
The IANA has permanently assigned one 13-bit IPv6 Top Level Aggregator (TLA) identifier under the IPv6 Format Prefix 001 [AARCH, AGGR] for the 6to4 scheme.Its numeric value is 0x0002, i.e., it is 2002::/16 when expressed as an IPv6 address prefix. ...
echo-n $out}enc(){echo-n"$1"|urlencode}send_request(){local args="AccessKeyId=$aliddnsipv6_ak&Action=$1&Format=json&$2&Version=2015-01-09"local hash=$(echo-n"GET&%2F&$(enc "$args")"|openssl dgst-sha1-hmac"$aliddnsipv6_sk&"-binary|openssl base64)curl-s"http://alidns.ali...