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control/controlknobs,wgengine/magicsock: implement SilentDisco toggle (#10195)

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This change exposes SilentDisco as a control knob, and plumbs it down to
magicsock.endpoint. No changes are being made to magicsock.endpoint
disco behavior, yet.

Updates #540

Signed-off-by: Jordan Whited <jordan@tailscale.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Jordan Whited
2023-11-13 10:05:04 -08:00
committed by GitHub
parent fe7f7bff4f
commit e848736927
5 changed files with 44 additions and 1 deletions
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4
tailcfg/tailcfg.go
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@@ -2123,6 +2123,10 @@ const (
// fixed port.
NodeAttrRandomizeClientPort NodeCapability = "randomize-client-port"
// NodeAttrSilentDisco makes the client suppress disco heartbeats to its
// peers.
NodeAttrSilentDisco NodeCapability = "silent-disco"
// NodeAttrOneCGNATEnable makes the client prefer one big CGNAT /10 route
// rather than a /32 per peer. At most one of this or
// NodeAttrOneCGNATDisable may be set; if neither are, it's automatic.