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wgengine: log subnet router decision at v1 if we have a BIRD client (#5786)

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Updates tailscale/coral#82

Change-Id: I398d75f7e178ff7c531ca09899c82cf974fc30c9
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
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Andrew Dunham 2022-09-29 14:14:14 -04:00 committed by GitHub
parent 58ffe928af
commit 420d841292
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1 changed files with 3 additions and 0 deletions
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3
wgengine/userspace.go
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@ -853,6 +853,9 @@ func (e *userspaceEngine) Reconfig(cfg *wgcfg.Config, routerCfg *router.Config,
isSubnetRouter := false
if e.birdClient != nil && nm != nil && nm.SelfNode != nil {
isSubnetRouter = hasOverlap(nm.SelfNode.PrimaryRoutes, nm.Hostinfo.RoutableIPs)
e.logf("[v1] Reconfig: hasOverlap(%v, %v) = %v; isSubnetRouter=%v lastIsSubnetRouter=%v",
nm.SelfNode.PrimaryRoutes, nm.Hostinfo.RoutableIPs,
isSubnetRouter, isSubnetRouter, e.lastIsSubnetRouter)
}
isSubnetRouterChanged := isSubnetRouter != e.lastIsSubnetRouter