On Fri, Apr 8, 2016, at 16:18, Bjørn Mork wrote: > Daniel Borkmann <dan...@iogearbox.net> writes: > > > > > if (!token) > > return -EINVAL; > > - if (ipv6_addr_any(token)) > > - return -EINVAL; > > if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) > > return -EINVAL; > > Not directly related to the patch in question. It just made me aware of > this restriction... > > I realize that I'm a few years late here, but what's with the IFF_NOARP? > Is that just because we can't do DAD for the token based addresses? How > is that different from manually configuring the whole address?
IFF_NOARP is kind of the equivalent to no neighbor discovery. If you set a token and never get in a router advertisement you never create a tokenized ip address, thus the feature is useless. Bye, Hannes
