From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: WireGuard mailing list <wireguard@lists.zx2c4.com>
Cc: "Toke Høiland-Jørgensen" <toke@toke.dk>,
"Dave Täht" <dave@taht.net>, "Juliusz Chroboczek" <jch@irif.fr>
Subject: Re: [RFC] Multicast and IPv6 Link Local Addresses
Date: Fri, 7 Apr 2017 16:31:05 +0200 [thread overview]
Message-ID: <CAHmME9ouagoSmxUy2R0YAhhUhX7PVRpJuP6S6PC+AxHKHtb+BA@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9poZPFbYhitnK8UvDB-32hLRcTFc4vAwaUPwGEz0wY+Yg@mail.gmail.com>
Hey George,
On Fri, Apr 7, 2017 at 4:13 PM, George Walker <georgewalkeriv@gmail.com> wrote:
> I'm far from an IP muticast expert, but it would seem more consistent with
> the existing cryptokey routing paradigm if the packets addressed to the
> multicast range went to every peer on that interface which had the multicast
> address addressed among its "allowedIPs." Then, the only difference between
> configuring multicast and unicast is how many peers may have the same
> allowedIP.
Thanks for this feedback. Indeed this is the initial design I had
thought about and discussed quite a bit. In the name of "simplicity" I
had been nudged back toward the easier special case semantics. I
suppose it's still up in the air.
== Peers Sharing Multiple AllowedIPs Entries ==
Pros:
- Highly configurable.
- More clear what's happening.
Cons:
- Right now there is a strict one-entry-one-peer enforcement, to
maintain the one to one. This has the nice property that if you try to
add the same allowed-ips to the same peer, by accident, the allowed-ip
simply _moves_. I rather like this behavior. Thus, there'd have to be
some explicit way of telling it, "yes I really do want this to be
duplicated, not moved". Perhaps a "multi:" prefix? I don't know, but
it's uglier UI stuff to grok.
== Special Cased Broadcast/Multicast Addresses ==
Pros:
- Simple on and off switch.
Cons:
- A bit too magical.
- Seems to break paradigm.
Hm.
Jason
next prev parent reply other threads:[~2017-04-07 14:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-07 14:02 Jason A. Donenfeld
2017-04-07 14:31 ` Jason A. Donenfeld [this message]
[not found] ` <03B23E99-75C4-4598-AC0A-3C65F346675F@gmail.com>
2017-04-07 20:42 ` Jason A. Donenfeld
2017-04-08 12:43 ` Toke Høiland-Jørgensen
2017-04-08 15:44 ` George Walker
2017-04-08 9:39 ` Dan Lüdtke
2017-04-08 17:15 ` Juliusz Chroboczek
2017-04-08 19:05 ` Juliusz Chroboczek
2017-04-17 14:11 ` Baptiste Jonglez
2017-04-17 16:55 ` Toke Høiland-Jørgensen
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