tailscale/ipn
James Tucker 21695cdbf8
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ipn/ipnlocal,net/netmon: make frequent darkwake more efficient
Investigating battery costs on a busy tailnet I noticed a large number
of nodes regularly reconnecting to control and DERP. In one case I was
able to analyze closely `pmset` reported the every-minute wake-ups being
triggered by bluetooth. The node was by side effect reconnecting to
control constantly, and this was at times visible to peers as well.

Three changes here improve the situation:
- Short time jumps (less than 10 minutes) no longer produce "major
  network change" events, and so do not trigger full rebind/reconnect.
- Many "incidental" fields on interfaces are ignored, like MTU, flags
  and so on - if the route is still good, the rest should be manageable.
- Additional log output will provide more detail about the cause of
  major network change events.

Updates #3363

Signed-off-by: James Tucker <james@tailscale.com>
2026-04-06 15:46:51 -07:00
..
auditlog all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
conffile all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
desktop all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
ipnauth all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
ipnext feature/conn25,ipn/ipnext,ipn/ipnlocal: add ExtraRouterConfigRoutes hook 2026-03-25 19:28:33 -07:00
ipnlocal ipn/ipnlocal,net/netmon: make frequent darkwake more efficient 2026-04-06 15:46:51 -07:00
ipnserver ipn/ipnserver: use peercreds for actor.Username on freebsd (for Taildrive) 2026-03-24 20:35:56 -07:00
ipnstate types/ptr: deprecate ptr.To, use Go 1.26 new 2026-03-05 20:13:18 -08:00
lapitest types/ptr: deprecate ptr.To, use Go 1.26 new 2026-03-05 20:13:18 -08:00
localapi client,cmd/tailscale,ipn/{ipnlocal,localapi}: add debug CLI command to clear netmap caches (#19213) 2026-04-02 12:06:39 -07:00
policy all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
store all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
backend_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
backend.go ipn,ipn/local: broadcast ClientVersion if AutoUpdate.Check (#19107) 2026-03-24 15:06:20 -07:00
conf_test.go ipn: reject advertised routes with non-address bits set (#18649) 2026-03-20 10:10:43 -07:00
conf.go ipn: fix the typo causing NoSNAT always set to true (#19110) 2026-03-24 16:41:58 -04:00
doc.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
ipn_clone.go tailcfg: reintroduce UserProfile.Groups 2026-03-09 11:08:45 +00:00
ipn_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
ipn_view.go tailcfg: reintroduce UserProfile.Groups 2026-03-09 11:08:45 +00:00
prefs_test.go cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
prefs.go ipn, cmd/tailscale/cli: allow setting FQDN sans dot as an exit node 2026-04-01 20:42:35 +01:00
serve_expand_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
serve_test.go cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
serve.go all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
store_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
store.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00