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<section>
<title>Erlang Distribution Without Large Node Container Support</title>
<p>
Communication over the Erlang distribution without support for large
<seeguide marker="erts:erl_dist_protocol#DFLAG_V4_NC"> node container
data types (version 4)</seeguide> is as of
<seeguide marker="deprecations#otp-24">OTP 24 deprecated</seeguide>
and support for it is scheduled for removal in OTP 26. That is, as
of OTP 26, support for large node container data types will become
mandatory.
</p>
</section>
<section>
<title>Old Link Protocol</title>
<p>
The <seeguide marker="erts:erl_dist_protocol#old_link_protocol">old
link protocol</seeguide> used when communicating over the Erlang
distribution is as of <seeguide marker="deprecations#otp-24">
OTP 24 deprecated</seeguide> and support for it is scheduled for
removal in OTP 26. As of OTP 26 the
<seeguide marker="erts:erl_dist_protocol#new_link_protocol">new
link protocol</seeguide> will become mandatory. That is, Erlang nodes
will then refuse to connect to nodes not implementing the new
link protocol. If you implement the Erlang distribution yourself, you
are, however, encouraged to implement the new link protocol as soon as
possible since the old protocol can cause links to enter an
inconsistent state.
</p>
</section>
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