IPv6-test.com is a free service that checks your IPv6 and IPv4 connectivity and speed. Diagnose connection problems, discover which address(es) you are currently using to browse the Internet, and what is your browser's protocol of choice when both v6 and v4 are available.

-6, --ipv6 (Use IPv6) . Tells Nping to use IP version 6 instead of the default IPv4. It is generally a good idea to specify this option as early as possible in the command line so Nping can parse it soon and know in advance that the rest of the parameters refer to IPv6. In this video, Cisco CCNA and CompTIA Network + Instructor Mark Jacob demonstrates how to do port redirections in IPv6. If you have any questions or comments, please feel free to post them. Until next time. Mark Jacob Cisco and CompTIA Network + Instructor – Interface Technical Training Phoenix, AZ A port number is an address for some Transport (OSI layer-4) protocols: TCP and UDP. Host processes bind to TCP or UDP at a particular port number, and the transport protocol sends any data destined for that port number to the process bound to that port number. The protocols used in IPv6 are the same as the protocols in IPv4. The only thing that changed between the two versions is the addressing scheme, DHCP [DHCPv6] and ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged. Edit: Port 0 is a reserved port

Nov 11, 2019 · NAT-PT for IPv6. NAT—PT is an IPv6-to-IPv4 translation mechanism, as defined in RFC 2765 and RFC 2766, that allows IPv6-only devices to communicate with IPv4-only devices and vice versa.

What is IPv6? IPv6 or IP version 6 is the next generation Internet protocol which will eventually replace the current protocol IPv4. IPv6 has a number of improvements and simplifications when compared to IPv4. The primary difference is that IPv6 uses 128-bit addresses as compared to the 32-bit addresses used with IPv4.

When IPv6 is enabled on Google Nest Wifi or Google Wifi, it uses the DHCPv6 protocol on its WAN port to request an address from your ISP. If the ISP supports the DHCPv6 protocol and has provisioned addresses for routers, then the router will obtain its own IPv6 address.

Here is an example of an IP address that contains a port number: [2001:db8:0:1]:80. The brackets are necessary only if also specifying a port number. Brackets are used to separate the address from the port number. If no port number is used, the brackets can be omitted. As an alternative, the block that contains a zero can be collapsed. Port restrictions for IPv6 are identical to those available in IPv4. Ports: TCP and UDP have separate port spaces, each identified by port numbers in the range 1-65535. For IPv6, ports work the same as IPv4. Because these are in a new address family, there are now four separate port spaces. Welcome to IPscan, the open source IPv6 port scanner, or firewall tester, which checks multiple, user-selectable TCP, UDP and ICMPv6 services. IPscan offers much of the functionality you might hope to find in an IPv6 version of GRC's ShieldsUP® utility. So far over 105158 IPv6 hosts, and of the order of 7781650 IPv6 ports, have been tested. Good question. While the answers seems trivial, it actually isn’t. First off, I would like to say that most home routers are actually router+firewall. So what, you may ask? In a fit of myopia, the designers for the IPv6 addresses numeric notation decided that the colon character was available for their use as a separator. As a result, a colon-delimited port number looks ambiguous on an IPv6 address. How can we incorporate a port number into a printed representation of an IPv6 address-with-port?