Re: ipv6 binds to ipv4, bug or feature ?

[Matti Aarnio]

On Sun, Jan 02, 2000 at 01:45:43AM +0200, Elmer Joandi wrote:
> sshd + ipv6,
> ssh is told to bind only to ipv6
> netstat -an shows binding to ::::22
> 	no binding to 0.0.0.0:22
> perl script socklist doesnt show anything
> 
> ipv4 connections are possible, shown as coming from ::ffff:ip:port

	Yes, IPv4-Compatible addressing.
	A feature of IPv6.

> I dont know, is it a bug or a feature, 
> but I hope that either
> 1. it will be possible to switch it out either compile or runtime.
> 2. it will be bug.

	Bind SSHD to your host's IPv6 address, and THEN it should
	not happen.  (Quite analogous to doing address+port specific
	binding in IPv4)

> otherwise it is not really good to experiment with ipv6 as everything
> connected to security must go trough double check now.
>
> elmer.

/Matti Aarnio <[e-mail]>