[OpenWrt-Devel] IPv6-question / fe80 / linklocal / uniq?

[Baptiste Jonglez]

On Tue, Jul 22, 2014 at 02:08:16PM +0200, Bastian Bittorf wrote:
> * Baptiste Jonglez <bjonglez at illyse.org> [22.07.2014 13:21]:
> > > root at box:~ ip neigh | grep ^'fe80::' | grep "lladdr $mac"
> > > fe80::1cfc:fe65:769:3784 dev wlan0 lladdr 84:b1:53:b2:b8:b3 STALE
> > > fe80::cea:3b47:5812:96be dev wlan0 lladdr 84:b1:53:b2:b8:b3 STALE
> > 
> >   # ip -6 addr add fe80::1cfc:fe65:769:3784/64 dev eth0
> >   # ip -6 addr add fe80::cea:3b47:5812:96be/64 dev eth0
> > 
> > I don't see any problem with that.
> > 
> > In your case, fe80::1cfc:fe65:769:3784 is an EUI64 address, while the
> > other one is not (so, probably added manually).
> 
> but should'nt be tge EUI64 of "84:b1:53:b2:b8:b3" the "fe80::86b1:53ff:feb2:b8b3"?
> (or is this only the subset 'modified EUI64'?)

Maybe this machine is running a ND proxy or something similar?  Without
describing your setup, it's hard to tell.

Btw, you could check on this other machine (the one with the
84:b1:53:b2:b8:b3 MAC address, I assume you have access to it) whether it
really has multiple link-local addresses.
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