There’s more than one way to write an IP address

Re:There’s more than one way to write an IP address by barrkel on Tuesday July 09, 2019 @10:36AM (#20392154)

IPv4 addresses can be parsed as host names per RFC 1123 section 2.1; it is merely convention ("SHOULD") that dotted numbers are checked as IP addresses before being passed through DNS.

This is what the parent meant. IPv4 addresses are also syntactically valid host names.

[ Parent | on HN ]

Re:There’s more than one way to write an IP address by metaphor on Tuesday July 09, 2019 @09:07PM (#20398345)

> IPv4 addresses are also syntactically valid host names.

Curious...from the philosophical intent supporting the normative language[1] (my emphasis added):

However, a valid host name can never have the dotted-decimal form #.#.#.#, since at least the highest-level component label will be alphabetic.

[1] https://tools.ietf.org/html/rfc1123#page-13

[ Parent | on HN ]

Re:There’s more than one way to write an IP address by bluejekyll on Tuesday July 09, 2019 @09:33PM (#20398466)

[ Parent | on HN ]