type Knobs struct {// DisableUPnP indicates whether to attempt UPnP mapping.DisableUPnPatomic.Bool// KeepFullWGConfig is whether we should disable the lazy wireguard// programming and instead give WireGuard the full netmap always, even for// idle peers.KeepFullWGConfigatomic.Bool// RandomizeClientPort is whether control says we should randomize// the client port.RandomizeClientPortatomic.Bool// OneCGNAT is whether the the node should make one big CGNAT route// in the OS rather than one /32 per peer.OneCGNATsyncs.AtomicValue[opt.Bool]// ForceBackgroundSTUN forces netcheck STUN queries to keep// running in magicsock, even when idle.ForceBackgroundSTUNatomic.Bool// DisableDeltaUpdates is whether the node should not process// incremental (delta) netmap updates and should treat all netmap// changes as "full" ones as tailscaled did in 1.48.x and earlier.DisableDeltaUpdatesatomic.Bool// PeerMTUEnable is whether the node should do peer path MTU discovery.PeerMTUEnableatomic.Bool// DisableDNSForwarderTCPRetries is whether the DNS forwarder should// skip retrying truncated queries over TCP.DisableDNSForwarderTCPRetriesatomic.Bool// SilentDisco is whether the node should suppress disco heartbeats to its// peers.SilentDiscoatomic.Bool// LinuxForceIPTables is whether the node should use iptables for Linux// netfiltering, unless overridden by the user.LinuxForceIPTablesatomic.Bool// LinuxForceNfTables is whether the node should use nftables for Linux// netfiltering, unless overridden by the user.LinuxForceNfTablesatomic.Bool// SeamlessKeyRenewal is whether to renew node keys without breaking connections.// This is enabled by default in 1.90 and later, but we but we can remotely disable// it from the control plane if there's a problem.//http://go/seamless-key-renewalSeamlessKeyRenewalatomic.Bool// ProbeUDPLifetime is whether the node should probe UDP path lifetime on// the tail end of an active direct connection in magicsock.ProbeUDPLifetimeatomic.Bool// AppCStoreRoutes is whether the node should store RouteInfo to StateStore// if it's an app connector.AppCStoreRoutesatomic.Bool// UserDialUseRoutes is whether tsdial.Dialer.UserDial should use routes to determine// how to dial the destination address. When true, it also makes the DNS forwarder// use UserDial instead of SystemDial when dialing resolvers.UserDialUseRoutesatomic.Bool// DisableSplitDNSWhenNoCustomResolvers indicates that the node's DNS manager// should not adopt a split DNS configuration even though the Config of the// resolver only contains routes that do not specify custom resolver(s), hence// all DNS queries can be safely sent to the upstream DNS resolver and the// node's DNS forwarder doesn't need to handle all DNS traffic.// This is for now (2024-06-06) an iOS-specific battery life optimization,// and this knob allows us to disable the optimization remotely if needed.DisableSplitDNSWhenNoCustomResolversatomic.Bool// DisableLocalDNSOverrideViaNRPT indicates that the node's DNS manager should not// create a default (catch-all) Windows NRPT rule when "Override local DNS" is enabled.// Without this rule, Windows 8.1 and newer devices issue parallel DNS requests to DNS servers// associated with all network adapters, even when "Override local DNS" is enabled and/or// a Mullvad exit node is being used, resulting in DNS leaks.// We began creating this rule on 2024-06-14, and this knob// allows us to disable the new behavior remotely if needed.DisableLocalDNSOverrideViaNRPTatomic.Bool// DisableCaptivePortalDetection is whether the node should not perform captive portal detection// automatically when the network state changes.DisableCaptivePortalDetectionatomic.Bool// DisableSkipStatusQueue is whether the node should disable skipping// of queued netmap.NetworkMap between the controlclient and LocalBackend.// See tailscale/tailscale#14768.DisableSkipStatusQueueatomic.Bool}

func (*Knobs)AsDebugJSON¶added inv1.50.0

func (k *Knobs) AsDebugJSON() map[string]any

AsDebugJSON returns k as something that can be marshalled with json.Marshalfor debug.

func (*Knobs)UpdateFromNodeAttributes¶added inv1.50.0

func (k *Knobs) UpdateFromNodeAttributes(capMaptailcfg.NodeCapMap)

UpdateFromNodeAttributes updates k (if non-nil) based on the provided selfnode attributes (Node.Capabilities).