Extends the network plumbing to support per-interface IPv6 address
configuration.
The `Interface` protocol supports `ipv6Address` and `ipv6Gateway`.
The agent's networking RPCs carry per-family fields via new
`InterfaceAddress`, `LinkRoute`, and `DefaultRoute` types in
`ContainerizationExtras`.
`NetlinkSession` adds IPv6 methods for address and route operations.
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Co-authored-by: michael_crosby <michael_crosby@apple.com>
Co-authored-by: Michael Crosby <crosbymichael@gmail.com>
- Bindable is generally useful, so it makes sense to move it out of the
netlink library. Removed Equatable conformance from Bindable as this
isn't generally necessary (it's only used for unit tests in netlink).
- Fix some offset checks in a couple data binding functions and improve
the unit tests.
Adds support for grabbing stats for an iface. This will be surfaced in a
coming change to get container level statistics from the guest, where
one field will be network stats.
