link: add ip6tnl tunnel support#36
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This pull request introduces support for IPv6 tunnels (ip6tnl) by implementing configuration parsing, display formatting, and integration tests, alongside updating MAC address string conversion to support IPv6. Feedback on the changes highlights a few critical issues: restoring LinkLayerType::Tunnel6 in the link-layer type matching to prevent display issues, returning early for external tunnels to match standard iproute2 output, and ensuring that the UseOrigTclass and UseOrigFlowlabel flags are correctly set or cleared when parsing tclass and flowlabel values (especially when using 'inherit').
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Introduce support for creating and displaying ip6tnl (IPv4|IPv6 over IPv6) tunnel interfaces via `ip link add type ip6tnl` and `ip link show`. Integration tests included. Signed-off-by: Gris Ge <cnfourt@gmail.com>
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Introduce support for creating and displaying ip6tnl (IPv4|IPv6 over IPv6)
tunnel interfaces via
ip link add type ip6tnlandip link show.Integration tests included.