Node Address: The request Node Address facilitates effective network node query during address resolution. In IPv4, ARP request frames are sent to MAC-level broadcasts, disrupting all nodes in the network segment, including nodes that do not run IPv4. IPv6 uses the "neighbor request" message to perform address resolution. However, all node addresses in the local link scope are not used as the target of the "neighbor request" message, because this may
of an address expires, the address cannot be used to create a new connection, but within the validity period, the address can also be used to maintain the previously established connection. When the address is re-edited, The vro in the site will continue to advertise the current prefix, but the effective time and priority time will be reduced to close to 0. Meanwhile, the vro starts to advertise the new prefix. In this way, at least two prefixes exist on each link. The RA message contains an ol
through Ethernet. The MAC address of the circuit board is 00-10-5C-F7-5F-5D. The local IPv6 address obtained through the address conversion algorithm is: fe80: 210: 5cff: fef7: 5f5d. When it is connected to the network, to verify the uniqueness of the address you want to configure, it needs to send neighbor request packets. Through the PC network packet capture tool Sniffer, we have caught the neighbor req
mentioned aboveThe system will automatically assign a link-local (link-local) address after Windows and Linux install IPv6That is, Ifconfig-a saw a line "Inet6 addr:fe80::20c:29ff:fed7:4214/64 scope:link", the yellow part is the IPv6 link local address.Now assume that the IPv6 address seen through Ipconfig under Win7 is as follows:% The index,windows term for the network interface corresponding to this
the IPv6 Site.
Appendix: Some Common commands:
C: \> netshNetsh> interfaceIPv6NetshinterfaceIPv6> addaddress "Local Connection" fe80: a520: 1314: 1/* set a fixed IPv6 address */NetshinterfaceIPv6> adddns "Local Connection" 2001: 251: e101: 0: 2/* Set IPv6DNS address */
3. If you connect through a tunnel, perform the following steps:
Configure
: FEC0: 0000: 0000: 0000: 02AA: 00FF: FE3F: 2A1C, in the IP6.INT domain:C.1.A. 2. F.3.E. F. f.0.0.0.a. a.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.c. E. F. IP6.INT.Comparison of IPv4 and IPv6 addressing conceptsTable 1 lists some IPv4 addressing concepts and their equivalence concepts in IPv6.Table 1 addressing concepts of IPv4 and corresponding concepts in IPv6IPv4 addressIPv6 addressCategory 5 Internet address Divi
In Linux, the method of enabling and disabling IPv6 is now supported by IPv6 by default. However, for some application servers that do not support IPv6 well, enabling IPv6 affects the server's network performance. after all, the current network switching device is not IPv6.
not have a direct equivalent object for the RFC 1918 private address space, although this is very close. Sites can use these to self-allocate routable private IP address spaces in your organization. However, these networks are no longer available on the global Internet. The site must randomly select a/48 from this space, but it can divide the allocated space normally into a/64 network
Fe80::/64
Local Link Address
Each
In Linux, the method of enabling and disabling IPv6 is now supported by IPv6 by default. However, for some application servers that do not support IPv6 well, enabling IPv6 affects the server's network performance. After all, the current network switching device is not IPv6.
. The packet sent to this address is passed to the identified interface. The Unicast address and multi-channel broadcast address are distinguished by the high-order eight-byte value. The high-sequence eight-byte of a multi-channel broadcast address has a hexadecimal value FF. Any other value of this eight-byte identifies the unicast address.
IPv6 address type 2: Link-local address.
These addresses are used for a single link and take the following form
How to disable IPv6 in CentOS
Disable IPv6
1. problem: when using yum to download something, the system prompts that an IPv6 address is inaccessible, as shown below:
Failed [Errno 14] pycurl error 7-"Failed to connect to 2001: da8: 8000: 6023: Network is unreachable"
Trying other mirror.
Error: failure: repodata/logs from epel: [Errno 256] No more mirrors to try.
Huazhong University of Science and Technology IPv6 settings, Linux
Linux isatap Configuration
Note:
(1) take the local IPv4 address 10.0.0.1 as an example. The IPv4 address of isatap.hust.edu.cn is 218.199.111.9;
(2) view the kernel version command uname-
(3) check whether there is a sit or isatap in the mode in the IP Tunnel HELP command.
Method 1: Use the SIT Tunnel
(1) If the IPv6
A summary of methods to disable IPV6 under Linux--http://www.jb51.net/linuxjishu/335724.htmlThis article mainly introduces the method of disabling IPv6 in Linux, the operation of disabling IPV6 or considering the current and IPV4 compatibility issues, the need for friends can refer to the followingPV6 is considered an alternative to the traditional 32-bit address
fe80: 5efe: 202.120.58.150No manual 256 2001: da8: 8000: d010:/64 12 isatap. {05377d32-90e1-4296-aa31-6d2f77adccc7}No manual 256 2001: da8: 8000: d010: 0: 5efe: 122.207.54.87/128 12 isatap. {05377d32-90e1-4296-aa31-6d2f77adccc7}The first item indicates that the data of the pseudo tunnel interface is forwarded through the isatap router 202.120.58.150.
The second item indicates that the network of 2001: da8: 8000: d010:/64 is forwarded through the pseu
IPv6 is the core protocol of the Next Generation Internet. It solves many defects exposed by the IPv4 protocol, such as address scarcity, large route tables, and insufficient support for mobile devices. IPv6 supports automatic Address Configuration of network nodes, which greatly simplifies the work of network administrators.
1. IPv6 address format and address co
IPv4. The Ipv6 router does not forward packets from the local address of the link. The first 10 bits are 1111 1110 10. Because the last 64 bit interface ID is used, its prefix is always FE80:/64 for example: FE80 :: 1. The Local Site address (Site-Local Addresses) can be used for Local networks that cannot access the internet. This is equivalent to the private a
You can postpone the deployment of the IPV6 strategy as you wish, but you must immediately address the security implications of IPV6. If you plan to IPv6 and IPV4 on a dual stack configuration, then you can't take it lightly in terms of security. If you think about turning your whole IPv6, it doesn't mean you can sit s
From: http://www.networkworld.com/community/node/37125
By Scott HoggOn Sun, 01/11/09-PM.
You may have IPv6 capabilities on your mobile phone and not evenRealize it. It has become apparent in 2008 that several mobile phoneProviders in the U. S. have started to include IPv6 capabilities in theirPhones. While this is great it has also caused the mobile phoneProviders to receive a wake-up call about the secur
With the continuous development of internet technology, the traditional IPV4 address can not meet the needs of users. The new generation of IPV6 protocol is increasingly widely accepted and used, and more and more software systems are required to support IPV6 network protocol. However, the existing network environment support to IPV6 is still very limited, which
ResolutionRed Hat Enterprise Linux 4, 5 and 6 enable Internet Protocol Version 6 (IPV6) by default. However, in certain situations, some users could find it desirable to disable IPV6 support or to re-enable it after it had b Een disabled.For Red Hat Enterprise Linux 6, the tech brief Preparing for IPv6 Networking in Red Hat Enterprise Linux provides a broad Intro
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