Update go dependencies and cleanup deprecated packages

vendor/k8s.io/apimachinery/pkg/util/net/BUILD

@@ -15,6 +15,7 @@ go_test(
         "port_split_test.go",
         "util_test.go",
     ],
+    importpath = "k8s.io/apimachinery/pkg/util/net",
     library = ":go_default_library",
     deps = ["//vendor/github.com/spf13/pflag:go_default_library"],
 )
@@ -28,6 +29,7 @@ go_library(
         "port_split.go",
         "util.go",
     ],
+    importpath = "k8s.io/apimachinery/pkg/util/net",
     deps = [
         "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/golang.org/x/net/http2:go_default_library",

vendor/k8s.io/apimachinery/pkg/util/net/http.go

@@ -256,8 +256,11 @@ func isDefault(transportProxier func(*http.Request) (*url.URL, error)) bool {
 // NewProxierWithNoProxyCIDR constructs a Proxier function that respects CIDRs in NO_PROXY and delegates if
 // no matching CIDRs are found
 func NewProxierWithNoProxyCIDR(delegate func(req *http.Request) (*url.URL, error)) func(req *http.Request) (*url.URL, error) {
-	// we wrap the default method, so we only need to perform our check if the NO_PROXY envvar has a CIDR in it
+	// we wrap the default method, so we only need to perform our check if the NO_PROXY (or no_proxy) envvar has a CIDR in it
 	noProxyEnv := os.Getenv("NO_PROXY")
+	if noProxyEnv == "" {
+		noProxyEnv = os.Getenv("no_proxy")
+	}
 	noProxyRules := strings.Split(noProxyEnv, ",")
 
 	cidrs := []*net.IPNet{}
@@ -273,17 +276,7 @@ func NewProxierWithNoProxyCIDR(delegate func(req *http.Request) (*url.URL, error
 	}
 
 	return func(req *http.Request) (*url.URL, error) {
-		host := req.URL.Host
-		// for some urls, the Host is already the host, not the host:port
-		if net.ParseIP(host) == nil {
-			var err error
-			host, _, err = net.SplitHostPort(req.URL.Host)
-			if err != nil {
-				return delegate(req)
-			}
-		}
-
-		ip := net.ParseIP(host)
+		ip := net.ParseIP(req.URL.Hostname())
 		if ip == nil {
 			return delegate(req)
 		}

vendor/k8s.io/apimachinery/pkg/util/net/http_test.go

@@ -172,6 +172,30 @@ func TestProxierWithNoProxyCIDR(t *testing.T) {
 			url:               "https://192.168.143.1:8443/api",
 			expectedDelegated: false,
 		},
+		{
+			name:              "IPv6 cidr",
+			noProxy:           "2001:db8::/48",
+			url:               "https://[2001:db8::1]/api",
+			expectedDelegated: false,
+		},
+		{
+			name:              "IPv6+port cidr",
+			noProxy:           "2001:db8::/48",
+			url:               "https://[2001:db8::1]:8443/api",
+			expectedDelegated: false,
+		},
+		{
+			name:              "IPv6, not matching cidr",
+			noProxy:           "2001:db8::/48",
+			url:               "https://[2001:db8:1::1]/api",
+			expectedDelegated: true,
+		},
+		{
+			name:              "IPv6+port, not matching cidr",
+			noProxy:           "2001:db8::/48",
+			url:               "https://[2001:db8:1::1]:8443/api",
+			expectedDelegated: true,
+		},
 	}
 
 	for _, test := range testCases {