Adds native dual-stack IPv6 to AmneziaWG inbounds, ported from
coinman-dev/3ax-ui's approach:
- ServerSettings gets ipv6Enabled/ipv6Subnet/ipv6ExternalInterface;
Instance carries the server's own IPv6 address (first host of the
subnet) alongside its IPv4 one.
- defaultAmneziaWGClients allocates an IPv6 host address per client
(second AllowedIPs entry) when the server has IPv6 enabled, reusing
allocateWireguardAddress — which needed a real fix along the way: it
always suffixed "/32" regardless of address family, which is wrong
for an IPv6 host address (needs /128). Now family-aware.
- generateServerConfig's PostUp/PostDown gains IPv6 forward-accept
rules, proxy_ndp sysctl, and one `ip -6 neigh add/del proxy` entry per
enabled peer with an IPv6 address — the lightweight per-client
method, not the ndppd-daemon whole-subnet method (not worth the
config-file-management complexity at this scale; ndppd itself is
still installed by install.sh in case that changes later).
- ValidateIPv6Subnet rejects a malformed subnet before save.
- Frontend: ipv6Enabled/ipv6Subnet/ipv6ExternalInterface fields on the
AmneziaWG inbound form, EN+RU translations, openapi.json/generated/*
regenerated (the latter via `go run ./tools/openapigen`, pure Go).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
AmneziaWG (WireGuard plus DPI-resistant obfuscation) needs no Docker
here — it runs as a genuine kernel interface via awg-quick/awg, managed
the same way internal/mtproto manages mtg: one Inbound row is one
desired Instance, and a Manager reconciles running interfaces toward
the database every 10s (internal/web/job/amneziawg_job.go) plus
immediately after a client edit (applyLocalAmneziaWG).
Clients reuse model.Client verbatim (the same PrivateKey/PublicKey/
PreSharedKey/AllowedIPs fields WireGuard already uses), so bulk
operations, the QR/share-link modal and subscriptions come from the
shared inbound infrastructure instead of a parallel implementation.
internal/amneziawg owns the obfuscation param generator/validator
(ported from coinman-dev/3ax-ui, upgraded to AmneziaWG 2.0's S3/S4
padding and I1 signature packet) and the exec wrapper around
awg-quick/awg, with fingerprint-based reconcile (noop / reload-via-
syncconf / full restart) mirroring mtproto.Manager so a same-protocol
edit doesn't force an unnecessary interface bounce that would drop
every peer's connection.
Frontend and install.sh's DKMS/awg-tools setup are tracked separately;
this is backend-only.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Kuzz007