netdev - Re: IFA_F_OPTIMISTIC is not supported?

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Message-ID: <20170908150733.GA21315@bistromath.localdomain>
Date:   Fri, 8 Sep 2017 17:07:33 +0200
From:   Sabrina Dubroca <sd@...asysnail.net>
To:     soohoon.lee@...com
Cc:     netdev@...r.kernel.org
Subject: Re: IFA_F_OPTIMISTIC is not supported?

2017-09-08, 10:29:03 -0400, soohoon.lee@...com wrote:
> rtm_newaddr masks off OPTIMISTIC.
> 
> inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
> ...
>         /* We ignore other flags so far. */
>         ifa_flags &= IFA_F_NODAD | IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR |
>                      IFA_F_NOPREFIXROUTE;
> 
> Is there any problem or not allowed?

I was planning to submit a patch to allow that soon (when net-next
reopens). While testing, I've found you need a few other small changes
once you allow userspace to set the optimistic flag on addresses.

Thanks,

-- 
Sabrina