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refactor: extract session/netcfg/tunnel, add mac/dhcp/policy-route flags

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- Split cmd/softether-go into main.go (flags, reconnect loop) and
  session.go (session lifecycle, DHCP orchestration)
- Extract network config to pkg/netcfg (TAP config, routing, DNS, policy routes)
- Move frame bridging to pkg/client/tunnel.go as Bridge() method
- Add -mac, -dhcp, -policy-route-table CLI flags
- Add SetMAC() to pkg/tap for deterministic DHCP assignments
- Update all docs to reflect new structure and flags

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Git Sagar 2026-06-06 16:43:12 +05:30
parent 846ed96ff4
commit 17c1063e1f
10 changed files with 495 additions and 332 deletions
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docs/main.md
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@ -9,7 +9,9 @@ Standalone SoftEther VPN client written in Go. Connects to SoftEther VPN servers
- Automatic reconnection with fresh DHCP on each reconnect
- Host route to VPN server via existing default gateway (prevents routing loops)
- Classless static routes (DHCP option 121/249, RFC 3442)
- Policy routing for asymmetric return paths (VPN port forwards)
- DNS configuration from DHCP lease (backup/restore of `/etc/resolv.conf`)
- Deterministic MAC address support for stable DHCP assignments
- Hashed password (SHA-0) and plaintext password (RADIUS/external) authentication
- Single static binary, Linux only