On Fri, 18 Jan 2002, Ruslan Ermilov wrote:
RE>On Thu, Jan 17, 2002 at 06:58:26PM +0100, Harti Brandt wrote:
RE>>
RE>> Hi,
RE>>
RE>> how is a daemon supposed to get informed that a network interface has been
RE>> created? I had hoped, that an RTM_IFINFO message would be created on the
RE>> routing socket, but this is not the case. If an interface is destroyed,
RE>> the routing socket gets a message for whatever reason. Wouldn't it be
RE>> simple to just create an RTM_IFINFO message?
RE>>
RE>It does get created (you can check with the ``route -vn monitor'' command),
RE>but please see PR kern/33747 for one small pitfall.
That's exactly what I did, but it doesn't work. The only places, that I
can find when rt_ifmsg is called are:
- interface goes up (if_route)
- interface goes down (if_unroute)
- change MTU (if_hwioctl)
- prom. mode (ifpromisc)
- allmulti (if_allmulti)
No one seems to call it when I just create an interface. The RTM_IFINFO
when I delete it probably comes from the if_unroute. The RTM_IFINFO you
see for an ifconfig gif0 create is probably a side effect of setting the
MTU or so.
I think it would make sense to do an rt_ifmsg somehere in
if_attach/if_detach.
harti
--
harti brandt, http://www.fokus.gmd.de/research/cc/cats/employees/hartmut.brandt/private
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