feat!: add IPv6 scanning support - #154
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Add NDP neighbor discovery and dual-stack support for ICMP, TCP, UDP, and SOCKS scans, including scoped link-local addresses. Replace the ARP-specific cache with a shared neighbor cache and add family-aware interface, routing, BPF, and packet handling. BREAKING CHANGE: Public scan and IP APIs now use netip.Addr and netip.Prefix. ARP cache APIs moved from pkg/scan/arp to pkg/scan/neighbor.
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Why
The scanner previously supported only IPv4 address generation, ARP resolution, routing, and raw packet handling.
What Changed
fe80::1%en0.net.IP/net.IPNettonetiptypes./96generated-range limit.Breaking Changes
netip.Addrandnetip.Prefix.pkg/scan/arptopkg/scan/neighbor.