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
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netcfg.go	add DHCP lease renewal at T/2	2026-06-06 22:05:34 +05:30