[ds6] Re: Application tool to acquire all ipv6 addresses on a specified int erface

[Donald McLachlan]

> From owner-users at ipv6.org Sun May  8 11:03:56 2005
> Subject: Re: Application tool to acquire all ipv6 addresses on a specified
> 	int erface
> 
> On Fri, 2005-05-06 at 08:29 -0400, Bellino, Phil wrote:
> > Hello,
> > I am running 2.6.11 linux and have IPv6 addresses on eth0, eth1, tun6to4,
> > etc.
> > 
> > I am looking for a tool that my applcation can use that will give me back
> > all of the IPv6 addresses that are on a specified interface.
> > I am trying to prevent having to execute a shell command(such as "ip" or
> > "ifconfig") and then having to parse all that is returned for the IPv6
> > addresses in question.
> > 
> > Does anyone know of such a tool?
> 
> It is called 'cat', or grep if you want a single entry
> 
> jeroen at purgatory:~$ cat /proc/net/if_inet6 
> 00000000000000000000000000000001 02 80 10 80       lo
> fe800000000000000a002bfffee702b3 03 40 20 80     eth1
> 200107b8000500100f71000000000002 03 50 00 80     eth1
> 200107b803000000029027fffe24c19f 01 40 00 80     eth0
> fe80000000000000029027fffe24c19f 01 40 20 80     eth0
> 
> Notez bien, this will only work on linux and not any other platform.
> Then again doing it crossplatform is I guess almost impossible anyway
> except if one codes a part for every separate OS.
> 
> Greets,
>  Jeroen


That give the interface names, not the addresses, as was requested.
RFC 3493 shows if_nameindex() will provide the list of available interfaces
in a portable manner.  The problem from the original quesiton is how to get
the addresses associated with the names without using ip or ifconfig.

Don