Re:Internet Draft: Let 'localhost' be localhost
by pilif on Tuesday August 08, 2017 @05:05AM
(#14955909)
> An interface on linux has only one ip address.
absolutely not true. Neither for IPv4 nor IPv6, where it's even the default to have a multitude of addresses on an interface.
> The "localhost" interface will either designate the ipv4 127.0.0.1 interface or the ipv6 ::1 interface. That's the realm of undefined behavior and system specifics.
no it won't. My loopback (lo) interface has both 127.0.0.1 and ::1 as its addresses.
Re:Internet Draft: Let 'localhost' be localhost
by __david__ on Tuesday August 08, 2017 @06:09AM
(#14956198)
> An interface on linux has only one ip address.
Eh?
$ ifconfig lo
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
Re:Internet Draft: Let 'localhost' be localhost
by justinclift on Tuesday August 08, 2017 @05:45AM
(#14956085)
> An interface on linux has only one ip address.
Just to point out, while the behaviour of any one OS is a useful data point for the discussion, it's not super useful to say "because OS 'foo' does things in a certain way, a well used programming language should limit it's design to that OS's way of doing things." :)
Hmmm, I guess I'm trying to say that (at least) Go should be fairly OS agnostic about this.
The "localhost" interface will either designate the ipv4 127.0.0.1 interface or the ipv6 ::1 interface. That's the realm of undefined behavior and system specifics.
This whole IETF draft looks like a mess. They should reserve the names localhost4 and localhost6.