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Re: [PATCH] IPv6: (5/5+1) Autoconfig link-local addr to IPv6 tunnels

To: davem@xxxxxxxxxx
Subject: Re: [PATCH] IPv6: (5/5+1) Autoconfig link-local addr to IPv6 tunnels
From: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@xxxxxxxxxxxxxx>
Date: Wed, 03 Sep 2003 06:37:05 +0900 (JST)
Cc: vnuorval@xxxxxxxxxx, pekkas@xxxxxxxxxx, usagi-core@xxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, yoshfuji@xxxxxxxxxxxxxx
In-reply-to: <20030902043534.05fc6586.davem@xxxxxxxxxx>
Organization: USAGI Project
References: <20030901035134.2585aa79.davem@xxxxxxxxxx> <Pine.LNX.4.44.0309011709370.29198-200000@xxxxxxxxxxxxxxx> <20030902043534.05fc6586.davem@xxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
In article <20030902043534.05fc6586.davem@xxxxxxxxxx> (at Tue, 2 Sep 2003 
04:35:34 -0700), "David S. Miller" <davem@xxxxxxxxxx> says:

> On Mon, 1 Sep 2003 17:24:42 +0300 (EEST)
> Ville Nuorvala <vnuorval@xxxxxxxxxx> wrote:
> > Ok, this incremental patch to my previous addrconf.c patch generates a
> > link-local address to the IPv6 tunnel device. It first tries to inherit
> > the EUI64 identifier of some other device and if this fails, uses a
> > random interface id.
> Yoshfuji, do you mind if I apply his patch 5 and "5/5+1"?

Well, I have a question and a comment.

        if (ifp->idev->cnf.forwarding == 0 &&
            (dev->flags&IFF_LOOPBACK) == 0 &&
+           dev->type != ARPHRD_TUNNEL6 &&
            (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
                struct in6_addr all_routers;


Comment: this strategy is the "default."  
We can (or even should) do this stretegy whenever we failed to 
ipv6_generate_eui64() in addrconf_dev_config().

Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@xxxxxxxxxxxxxx>
GPG FP: 9022 65EB 1ECF 3AD1 0BDF  80D8 4807 F894 E062 0EEA

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