netdev - Re: [PATCH] net-ipv6-ndisc: add support for 'PREF64' dns64 prefix identifier

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Message-ID: <CAKD1Yr2xAkr4=2tdPCtCPtFve0UQz2sbs2bYCr7kJnqc2VQ54w@mail.gmail.com>
Date:   Tue, 24 Mar 2020 11:10:39 +0900
From:   Lorenzo Colitti <lorenzo@...gle.com>
To:     Maciej Żenczykowski <zenczykowski@...il.com>
Cc:     Maciej Żenczykowski <maze@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        Linux Network Development Mailing List 
        <netdev@...r.kernel.org>, Erik Kline <ek@...gle.com>,
        Jen Linkova <furry@...gle.com>, Michael Haro <mharo@...gle.com>
Subject: Re: [PATCH] net-ipv6-ndisc: add support for 'PREF64' dns64 prefix identifier

On Tue, Mar 24, 2020 at 10:10 AM Maciej Żenczykowski
<zenczykowski@...il.com> wrote:
> As specified in draft-ietf-6man-ra-pref64-09 (while it is still a draft,
> it is purely waiting on the RFC Editor for cleanups and publishing):
>   PREF64 option contains lifetime and a (up to) 96-bit IPv6 prefix.

Right. The number is assigned by IANA and the draft is in the RFC
editor queue, so this number will not change.

> diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
> index 4a3feccd5b10..6ffa153e5166 100644
> --- a/net/ipv6/ndisc.c
> +++ b/net/ipv6/ndisc.c
> @@ -197,6 +197,7 @@ static inline int ndisc_is_useropt(const struct net_device *dev,
>         return opt->nd_opt_type == ND_OPT_RDNSS ||
>                 opt->nd_opt_type == ND_OPT_DNSSL ||
>                 opt->nd_opt_type == ND_OPT_CAPTIVE_PORTAL ||
> +               opt->nd_opt_type == ND_OPT_PREF64 ||
>                 ndisc_ops_is_useropt(dev, opt->nd_opt_type);
>  }

Acked-By: Lorenzo Colitti <lorenzo@...gle.com>