epmd: require explicitly adding loopback address (see also #1075) #1422
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Remove the implicit binding of the IPv4 and IPv6 loopback addresses.
Some methods of disabling IPv6 support on Linux and Windows removes the
IPv6 address from the interface.
This change also allows binding to IPv6 or IPv4 addresses only:
# previous behaviour
# tcp 0 0 127.0.0.1:4369 0.0.0.0:* LISTEN
# tcp6 0 0 ::1:4369 :::* LISTEN
ERL_EPMD_ADDRESS="127.0.0.1,::1" epmd
# IPv4 ANY
# tcp 0 0 127.0.0.1:4369 0.0.0.0:* LISTEN
ERL_EPMD_ADDRESS="0.0.0.0" epmd
# IPv6 ANY
# tcp6 0 0 :::4369 :::* LISTEN
ERL_EPMD_ADDRESS="::" epmd
# IPv6 loopback only
# tcp6 0 0 ::1:4369 :::* LISTEN
ERL_EPMD_ADDRESS="::1" epmd
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ℹ️ This is a rebase of #1075.
Remove the implicit binding of the IPv4 and IPv6 loopback addresses.
Some methods of disabling IPv6 support on Linux and Windows removes the
IPv6 address from the interface.
This change also allows binding to IPv6 or IPv4 addresses only: