On Tue, 29 Aug 2006, David Miller wrote:
From: YOSHIFUJI Hideaki <[EMAIL PROTECTED]>
Date: Tue, 29 Aug 2006 18:34:26 +0900 (JST)
Further analysis is needed, but one idea is to skip
addrconf_dev_config() if !(dev->flags & IFF_MULTICAST).
Yes, it is logical because without multicast IPV6 cannot
work correctly.
But from another perspective (I assume these bridged Xen devices use
ARPHRD_ETHER, do they?) a device with ARPHRD_ETHER and cleared
IFF_MULTICAST flag seems potentially problematic. How many other
things break over such a device?
It's not obvious that IFF_MULTICAST is good enough. IMHO, you should
be able to run addrconf on non-multicast interfaces as well (e.g.,
point-to-point interfaces, tunnels in particular).
It seems that current code already excludes IFF_NOARP interfaces
though.
--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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