ipv6

方法/步骤 使用ifconfig命令查看网卡信息，如果出现inet6 fe80::20c:29ff:fed0:3514，说明机器开启了ipv6，如下图所示： 编辑/etc/sysctl.conf配置，增加net.ipv6.conf.all.disable_ipv6=1，如下图所示： 编辑/etc/sysconfig/network配置，增加 NETWORKING_IPV6=no，保存并退出，如下图所示： 编辑/etc/sysconfig/network-scripts/ifcfg-eno16777736，确保IPV6INIT=no，ifcfg-eno16777736是根据自己机器的，实际网卡信息来看，不是固定的，如下图所示： 关闭防火墙的开机自启动，systemctl disable ip6tables.service，如下图所示： 执行sysctl -p或者reboot重启命令，如下图所示： 7 再次使用ifconfig进行验证，只剩下ipv4，ipv6消失了，关闭成功，如下图所示： 来源： https://www.cnblogs.com/zhoading/p/11639204.html

Question Should one discard a packet with an unknown IPv6 extension header? Details I could not find an answer to this question by examining the RFC . The book IPv6 Essentials states on page 22: If a node is required the next header but cannot identify the value in the Next Header field, it is required to discard the packet and send an ICMPv6 Parameter Problem message back to the source of the packet. I read this as: a IPv6 packet with a custom extension header cannot will be dropped unless all IPv6 stacks along the path know how to deal with the header. Or equivalently, if a single IPv6

HttpServletRequest.getRemoteAddr() in Tomcat returns IPv6 formatted IP address, but I would like to configure it that returns IPv4. I access the servlet via 'localhost'. If I access it via '127.0.0.1' then returns IPv4 formatted IP address (see this answer ). Environment: Windows 7 x64 Tomcat 6.0.35-windows-x64 My LAN connection properties: IPv6 is checked off , but it doesn't work neither if I check it on. try adding this parameter -Djava.net.preferIPv4Stack=true to your tomcat startup commandline. when you use localhost/xxx, your browser first have to find the mapped address for the name

I am using getifaddrs() and inet_ntop() to get the ip addresses on the system. When the system is set to IPv6 the address returned is in the shortened version (using :: for zeros). Is there any way to expand that address to a full one? This is the code I am using: struct ifaddrs *myaddrs, *ifa; void *in_addr; char buf[64]; if(getifaddrs(&myaddrs) != 0) { perror("getifaddrs"); exit(1); } for (ifa = myaddrs; ifa != NULL; ifa = ifa->ifa_next) { if (ifa->ifa_addr == NULL) continue; if (!(ifa->ifa_flags & IFF_UP)) continue; switch (ifa->ifa_addr->sa_family) { case AF_INET: { struct sockaddr_in *s4

When I examine the output of IPGlobalProperties.GetActiveTcpListeners() , I see listeners on 0.0.0.0 as well as :: . I believe that listening on a port on 0.0.0.0 is equivalent to listening on a port on any network adapter, at least my memory of the Windows socket API says that this is so. It also makes sense to me that :: would mean the equivalent in IPv6 parlance so a listener on [::]:49156 would be listening to port 49156 on all IPv6 network adapters where as [::1]:1434 would be port 1434 on only the IPv6 loopback adapter. Is this correct? I assume that IPv6 listen end-points only apply to

One of my project uses the Apple's Reachability class in order to be monitor the network state and be notified in case of changes. After reading this article about supporting IPv6 I was wondering if were to be made to this class to make it work with IPv6. I set up an IPv6 network following the same article and everything seems to work fine but maybe there is an issue with the setup. Is the part of the Reachability class checking the Internet connection working with IPv6 as it is now or does it need some changes? Andrew Y Short answer from Apple itself ( https://developer.apple.com/videos/play