Re: [Bluez-devel] IPv6 stateless address autoconf on bnep iface in down state

[Peter Robinson <pbrobinson@gmail.com>]

On 6/1/05, Gabor Fekete <feketga@delfin.unideb.hu> wrote:
> Hi,
>=20
> I have a problem with bnepX interfaces.
> I use stateless address autoconfiguration to set up the address
> on a bnep0 interface. It works fine.
> But when I 'ip link set bnep0 down' then after seeing the routes
> and ip addresses of bnep0 disappear, they appear again.
> That is, ip addresses and routes are created for bnep interfaces
> even if they are down.
> After putting the interface down
> o the global ip address appears in 'ip -6 addr' for bnep0
> o the link-local address does NOT appear
> o the prefix routes appear for bnep0 in 'ip -6 route'
> o the default route for bnep0 appears in 'ip -6 route'
> This happens only for bnep interfaces. For wired and
> WLAN interfaces, the addresses and routes disappear as they should
> and never come back unless the interface is put "up" again.
>=20
> Is this the normal behaviour for bnep interfaces or a bug?
> This behavious causes a problem for example MIPL2 (MIPv6)

>From memory I think this is normal behaviour of network interfaces in
general under Linux. I think if you have any sort of network interface
in a down state you can still ping the actual IP address on the
interface. I seem to remember this being  discussed on lkml. But then
my memory may not be correct too.

Pete


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