uv_if_indextoname() is used to convert an IPv6 scope_id
to an interface identifier string such as %eth0 or %lo.

uv_if_indextoiid() returns an IPv6 interface identifier.
On Unix it calls uv_if_indextoname(). On Windows it uses
snprintf() to return the numeric interface identifier as
a string.

Refs: nodejs/node#14500
PR-URL: #1445
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Zone IDs on Linux are network interface names. The regex we use to
determine valid IPs does not allow for non-alphanumeric characters
in the zone ID suffix. Some machines (including the RHEL Linux/s390x
machines from Marist) have zone IDs with a '.' character in them
which the regex in net.isIP rejects. This changes the regex.

Ref: #14500

Signed-off-by: Stewart Addison <sxa@uk.ibm.com>

PR-URL: #34364
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Zone IDs on Linux are network interface names. The regex we use to
determine valid IPs does not allow for non-alphanumeric characters
in the zone ID suffix. Some machines (including the RHEL Linux/s390x
machines from Marist) have zone IDs with a '.' character in them
which the regex in net.isIP rejects. This changes the regex.

Ref: #14500

Signed-off-by: Stewart Addison <sxa@uk.ibm.com>

PR-URL: #34364
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Add IPv6 link local scope ID suffix to the
rinfo address in those received upd6 datagrams
whose source address is a link local address.

Add a new test case, test-dgram-udp6-link-local-address,
to verify that IPv6 UDP datagrams received from a
link-local source address do contain the scope ID
suffix in the rinfo address field.

When a packet is received from a link-local source
address, if the address does not contain the scope
ID suffix, it is impossible to reply back to the
sender, as the kernel is not able to determine
the right network interface to send the packet
through and returns with an error.

Ref: #1649
PR-URL: #14500

Refs: #1649
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Stewart X Addison <sxa@uk.ibm.com>

Zone IDs on Linux are network interface names. The regex we use to
determine valid IPs does not allow for non-alphanumeric characters
in the zone ID suffix. Some machines (including the RHEL Linux/s390x
machines from Marist) have zone IDs with a '.' character in them
which the regex in net.isIP rejects. This changes the regex.

Ref: #14500

Signed-off-by: Stewart Addison <sxa@uk.ibm.com>

PR-URL: #34364
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Add IPv6 link local scope ID suffix to the
rinfo address in those received upd6 datagrams
whose source address is a link local address.

Add a new test case, test-dgram-udp6-link-local-address,
to verify that IPv6 UDP datagrams received from a
link-local source address do contain the scope ID
suffix in the rinfo address field.

When a packet is received from a link-local source
address, if the address does not contain the scope
ID suffix, it is impossible to reply back to the
sender, as the kernel is not able to determine
the right network interface to send the packet
through and returns with an error.

Ref: #1649
PR-URL: #14500

Refs: #1649
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Stewart X Addison <sxa@uk.ibm.com>

Notable changes:

dgram:
  * (SEMVER-MINOR) add IPv6 scope id suffix to received udp6 dgrams (Pekka Nikander) #14500
doc:
  * add AshCripps to collaborators (AshCripps) #34494
  * add HarshithaKP to collaborators (Harshitha K P) #34417
  * add rexagod to collaborators (Pranshu Srivastava) #34457
  * add release key for Richard Lau (Richard Lau) #34397
events:
  * (SEMVER-MINOR) expand NodeEventTarget functionality (Anna Henningsen) #34057
src:
  * (SEMVER-MINOR) allow preventing SetPromiseRejectCallback (Shelley Vohr) #34387
  * (SEMVER-MINOR) allow setting a dir for all diagnostic output (AshCripps) #33584
worker:
  * (SEMVER-MINOR) make MessagePort inherit from EventTarget (Anna Henningsen) #34057

PR-URL: TODO