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Do Source Address Selection when choosing an IPv6 source address as per RFC 6724
section 5 rules 1-3:
1) Prefer same address
2) Prefer appropriate scope
3) Avoid deprecated addresses.
A later change will update Source Address Selection to follow rules 4-8.
Tests:
Rule 1 & 2: stack.TestIPv6SourceAddressSelectionScopeAndSameAddress,
Rule 3: stack.TestAutoGenAddrTimerDeprecation,
stack.TestAutoGenAddrDeprecateFromPI
PiperOrigin-RevId: 289559373
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Pass the NIC-internal name to the NIC name function when generating opaque IIDs
so implementations can use the name that was provided when the NIC was created.
Previously, explicit NICID to NIC name resolution was required from the netstack
integrator.
Tests: Test that the name provided when creating a NIC is passed to the NIC name
function when generating opaque IIDs.
PiperOrigin-RevId: 288395359
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Support generating opaque interface identifiers as defined by RFC 7217 for
auto-generated IPv6 link-local addresses. Opaque interface identifiers will also
be used for IPv6 addresses auto-generated via SLAAC in a later change.
Note, this change does not handle retries in response to DAD conflicts yet.
That will also come in a later change.
Tests: Test that when configured to generated opaque IIDs, they are properly
generated as outlined by RFC 7217.
PiperOrigin-RevId: 288035349
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Fixed a bug where the interface identifier was not properly generated from an
Ethernet address.
Tests: Unittests to make sure the functions generating the EUI64 interface
identifier are correct.
PiperOrigin-RevId: 285494562
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