+var privateNetworks = func() (nets []*net.IPNet) {
+ for _, s := range []string{
+ "127.0.0.0/8",
+ "10.0.0.0/8",
+ "172.16.0.0/12",
+ "192.168.0.0/16",
+ "169.254.0.0/16",
+ "::1/128",
+ "fe80::/10",
+ "fc00::/7",
+ } {
+ _, n, err := net.ParseCIDR(s)
+ if err != nil {
+ panic(fmt.Sprintf("privateNetworks: %q: %s", s, err))
+ }
+ nets = append(nets, n)
+ }
+ return
+}()
+