p2p/nat: use IP.IsPrivate (#26252)
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@ -95,13 +95,6 @@ func discoverPMP() Interface {
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return nil
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}
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var (
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// LAN IP ranges
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_, lan10, _ = net.ParseCIDR("10.0.0.0/8")
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_, lan176, _ = net.ParseCIDR("172.16.0.0/12")
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_, lan192, _ = net.ParseCIDR("192.168.0.0/16")
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)
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// TODO: improve this. We currently assume that (on most networks)
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// the router is X.X.X.1 in a local LAN range.
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func potentialGateways() (gws []net.IP) {
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@ -116,7 +109,7 @@ func potentialGateways() (gws []net.IP) {
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}
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for _, addr := range ifaddrs {
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if x, ok := addr.(*net.IPNet); ok {
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if lan10.Contains(x.IP) || lan176.Contains(x.IP) || lan192.Contains(x.IP) {
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if x.IP.IsPrivate() {
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ip := x.IP.Mask(x.Mask).To4()
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if ip != nil {
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ip[3] = ip[3] | 0x01
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