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Re: [dnssd] The DNSSD WG has placed draft-sctl-service-registration in state "Call For Adoption By WG Issued"

Toke Høiland-Jørgensen <toke@toke.dk> Thu, 12 July 2018 21:27 UTC

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From: Toke Høiland-Jørgensen <toke@toke.dk>
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To: Ted Lemon <mellon@fugue.com>
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Date: Thu, 12 Jul 2018 23:27:41 +0200
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Subject: Re: [dnssd] The DNSSD WG has placed draft-sctl-service-registration in state "Call For Adoption By WG Issued"
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Ted Lemon <mellon@fugue.com> writes:

> The only reason I think it would be a serious problem for a service to
> register an IP address other than its own is that it could be used as
> a way to wedge in an attack.

Right. But if we want to protect against that we'd need to only allow
registrations for the IP we are talking to; which means separate
registrations for IPv4 and IPv6. And for v4 it would probably mean a
requirement for on-link presence, since anything that is not on-link is
likely to have at least one layer of NAT in-between...

> The real sticky wicket is that you can't update two zones in the same
> update, but that's not really what you were talking about.

Ah, right, then it makes sense. I may have been ignoring this part of
the spec in my implementation ;)

-Toke

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