How do ports work with IPv6?

Asked 2008-10-09T11:29:26.857

208

Conventional IPv4 dotted quad notation separates the address from the port with a colon, as in this example of a webserver on the loopback interface:

127.0.0.1:80

but with IPv6 notation the address itself can contain colons. For example, this is the short form of the loopback address:

::1

How are ports (or their functional equivalent) expressed in a textual representation of an IPv6 address/port endpoint?

Edit Report

1 Answer

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 in TCP but it does exist. See RFC793

answered 2008-10-09T11:33:55.867

How do ports work with IPv6?

1 Answer

Your Answer