In article [ref] (at Thu, 25 Nov 2004 23:13:30 +0200), Hasso Tepper [off-list ref] says:

David S. Miller wrote:

quoted

On Tue, 23 Nov 2004 23:22:50 +0200

My first letter didn't end in list, seems. Sorry if most of this info will 
be duplicate.

quoted

Hasso Tepper [off-list ref] wrote:

quoted

While debugging IPv6 RIB in Quagga routing software I discovered some
issues with kernel rtnetlink messages.

1) RTM_NEWROUTE message with prefix ff00::/8 (if interface goes up or
down) is sent with rtm_type set to RTN_UNICAST. It's multicast route,
so why not RTN_MULTICAST? Is it bug?

What kernel version?  I remember fixing this bug.
We should not be emitting rtnetlink messages for
these any more.

Although my main production platform is 2.4.28, I tested with 2.6.9 (with 
patch added from http://oss.sgi.com/archives/netdev/2004-11/msg00558.html) 
as well. Is this too old already?

I tested now with 2.6.10-rc2-bk8 as well and all these bugs are still there. 
RTM_NEWROUTE messages are sent for both, ff00::/8 and fe80::/64 with 
rtm_type set to RTN_UNICAST and rtm_protocol set to RTPROT_BOOT.

Okay, I eat this report.

Another fact: In IPv4, RTPROT_BOOT is set if it is configured 
if route is configued via ip_rt_ioctl().
If is called from ipconfig or inet_ioctl().
RTPROT_BOOT should be set only when it is set via ipconfig, I think.

Back to IPv6. Do we really need RTPROT_BOOT in IPv6?
I don't think so.

Because we don't know if the interface was brought up
by kernel during boot (by ipconfig), so 
it is not trivial.

hasso:/home/hasso# ip -6 route | grep 3ffe
hasso:/home/hasso# ip -6 addr add 3ffe::1/64 dev eth0
hasso:/home/hasso# ip -6 route | grep 3ffe
3ffe::/64 dev eth0  metric 256  mtu 1500 advmss 1440 metric10 64
hasso:/home/hasso# ip -6 addr del 3ffe::1/64 dev eth0
hasso:/home/hasso# ip -6 route | grep 3ffe
3ffe::/64 dev eth0  metric 256  mtu 1500 advmss 1440 metric10 64
hasso:/home/hasso#

I think this is a bug.

-- 
Hideaki YOSHIFUJI @ USAGI Project [off-list ref]
GPG FP: 9022 65EB 1ECF 3AD1 0BDF  80D8 4807 F894 E062 0EEA