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Network transparency is most certainly not an advertised feature of D-Bus. There has been some experimentation, but nothing concrete has ever come out of it. Nor does anyone really use it as a remote protocol.

In contrast, SunRPC is RPC, so network transparency is a given. The reason I said "nominally" is because in the case of SystemXVI, having proper distributed service management (not a goal at this point) would require more than that.

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> having proper distributed service management

Which is more or less what CoreOS's `fleet` already does on top of systemd. They used a different protocol for remote communications (etcd, ie. HTTP+JSON) vs. local, which I guess can be a sensible choice as requirements are quite different.

Yes, and they had to create an ad-hoc layer over systemd using a particular K-V store. Contrast to the more generic and seamless option of RPC interfaces, which are more versatile in making policy decisions.

http://dbus.freedesktop.org/doc/dbus-specification.html

Search for "TCP".

Note the complete lack of security.

(A shared secret sent in plain text is not security).

I guess it's meant to go over TLS, just like HTTP basic auth.

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