sagar/softether-go
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5 commits

Author SHA1 Message Date
Git Sagar
51824b830e netcfg: add -connmark flag for DNAT reply routing 
When VPN traffic is DNAT'd to local namespaces/VMs, reply packets have
a different source IP (namespace veth) so the policy route's
"from <VPN_IP>" rule doesn't match. CONNMARK marks all connections
arriving on the VPN interface and restores the mark on reply packets,
routing them back through the tunnel via fwmark rule.

New flag: -connmark (requires -policy-route-table)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-06-07 01:06:17 +05:30
Git Sagar
857733863c netcfg: suppress RTNETLINK errors from policy route cleanup 
Use runQuiet for ip rule/route del commands that may fail harmlessly
when no existing rule exists (e.g. first run after deploy).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-06-07 00:42:56 +05:30
Git Sagar
6416159164 add DHCP lease renewal at T/2 
- Add Renew() to dhcp.Client: sends REQUEST with ciaddr (RENEWING state)
- Start renewal goroutine in session at lease_time/2
- On IP change: flush TAP, reconfigure address/routes/DNS/policy routes
- On renewal failure: retry at T/4 (min 60s)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-06-06 22:05:34 +05:30
Git Sagar
995504d761 netcfg: add verbose logging for TAP configuration 
Log each step: address assignment, static routes, default route,
DNS changes, and cleanup flush.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-06-06 17:08:28 +05:30
Git Sagar
17c1063e1f refactor: extract session/netcfg/tunnel, add mac/dhcp/policy-route flags 
- 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>
 2026-06-06 16:43:12 +05:30