diff --git a/pkg/middlewares/requestdecorator/request_decorator.go b/pkg/middlewares/requestdecorator/request_decorator.go
index fcb6fb983..013cb12c3 100644
--- a/pkg/middlewares/requestdecorator/request_decorator.go
+++ b/pkg/middlewares/requestdecorator/request_decorator.go
@@ -49,11 +49,16 @@ func (r *RequestDecorator) ServeHTTP(rw http.ResponseWriter, req *http.Request,
 
 func parseHost(addr string) string {
 	if !strings.Contains(addr, ":") {
+		// IPv4 without port or empty address
 		return addr
 	}
 
+	// IPv4 with port or IPv6
 	host, _, err := net.SplitHostPort(addr)
 	if err != nil {
+		if addr[0] == '[' && addr[len(addr)-1] == ']' {
+			return addr[1 : len(addr)-1]
+		}
 		return addr
 	}
 	return host
diff --git a/pkg/middlewares/requestdecorator/request_decorator_test.go b/pkg/middlewares/requestdecorator/request_decorator_test.go
index 15c5ee89e..03c8f4018 100644
--- a/pkg/middlewares/requestdecorator/request_decorator_test.go
+++ b/pkg/middlewares/requestdecorator/request_decorator_test.go
@@ -104,7 +104,7 @@ func TestRequestFlattening(t *testing.T) {
 	}
 }
 
-func TestRequestHostParseHost(t *testing.T) {
+func Test_parseHost(t *testing.T) {
 	testCases := []struct {
 		desc     string
 		host     string
@@ -130,6 +130,46 @@ func TestRequestHostParseHost(t *testing.T) {
 			host:     "127.0.0.1:",
 			expected: "127.0.0.1",
 		},
+		{
+			desc:     "host with : and without port",
+			host:     "fe80::215:5dff:fe20:cd6a",
+			expected: "fe80::215:5dff:fe20:cd6a",
+		},
+		{
+			desc:     "IPv6 host with : and with port",
+			host:     "[fe80::215:5dff:fe20:cd6a]:123",
+			expected: "fe80::215:5dff:fe20:cd6a",
+		},
+		{
+			desc:     "IPv6 host with : and without port",
+			host:     "[fe80::215:5dff:fe20:cd6a]:",
+			expected: "fe80::215:5dff:fe20:cd6a",
+		},
+		{
+			desc:     "IPv6 host without : and without port",
+			host:     "[fe80::215:5dff:fe20:cd6a]",
+			expected: "fe80::215:5dff:fe20:cd6a",
+		},
+		{
+			desc:     "invalid IPv6: missing [",
+			host:     "fe80::215:5dff:fe20:cd6a]",
+			expected: "fe80::215:5dff:fe20:cd6a]",
+		},
+		{
+			desc:     "invalid IPv6: missing ]",
+			host:     "[fe80::215:5dff:fe20:cd6a",
+			expected: "[fe80::215:5dff:fe20:cd6a",
+		},
+		{
+			desc:     "empty address",
+			host:     "",
+			expected: "",
+		},
+		{
+			desc:     "only :",
+			host:     ":",
+			expected: "",
+		},
 	}
 
 	for _, test := range testCases {