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Re: Contents of /etc/hosts


From: Hartmut Goebel
Subject: Re: Contents of /etc/hosts
Date: Sun, 9 Oct 2016 12:53:13 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

Am 09.10.2016 um 11:56 schrieb John Darrington:
>      But for IPv6 the loopback interface has ::1/128, this ::2 would not got
>      there.
>      
>      So if we follow your proposal adding "127.0.0.2 gambrius" to /etc/hosts,
>      we could not contently doe this for IPv6.
>      
> IPv6 is something I'm not really familiar with.  Presumably there is an 
> equivalent way to do this in IPv6 ?

I don't think we can use somehting like "::2 gamrius" for IPv6. I did
not find documentation for this when In did a short Internet search but:

* According to some sources, the loopback interface address is ::1/128,
which would be the same as 127.0.0.1/32. Thus this loopback is a kind of
point-to-point interface in IPv6, where as in IPv4 it "accepts" a /8
network.

*  "/sbin/ip -6 route" says:

      unreachable ::/96 dev lo  metric 1024  error -113 pref medium

   So when sending a packet to ::2 this will simply be discard.

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | address@hidden               |
| www.crazy-compilers.com | compilers which you thought are impossible |





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