diff --git a/src/wp-includes/formatting.php b/src/wp-includes/formatting.php
index eeb54dba03..91b3134ffa 100644
--- a/src/wp-includes/formatting.php
+++ b/src/wp-includes/formatting.php
@@ -3398,7 +3398,7 @@ function esc_url( $url, $protocols = null, $_context = 'display' ) {
 
 	if ( ( false !== strpos( $url, '[' ) ) || ( false !== strpos( $url, ']' ) ) ) {
 
-		$parsed = parse_url( $url );
+		$parsed = wp_parse_url( $url );
 		$front  = '';
 
 		if ( isset( $parsed['scheme'] ) ) {
diff --git a/tests/phpunit/tests/formatting/EscUrl.php b/tests/phpunit/tests/formatting/EscUrl.php
index b77fbc3b21..0d3e2359c7 100644
--- a/tests/phpunit/tests/formatting/EscUrl.php
+++ b/tests/phpunit/tests/formatting/EscUrl.php
@@ -210,4 +210,18 @@ EOT;
 		$this->assertEmpty( esc_url_raw('"^<>{}`') );
 	}
 
+	/** 
+	 * @ticket 34202
+	 */
+	function test_ipv6_hosts() {
+		$this->assertEquals( '//[::127.0.0.1]', esc_url( '//[::127.0.0.1]' ) );
+		$this->assertEquals( 'http://[::FFFF::127.0.0.1]', esc_url( 'http://[::FFFF::127.0.0.1]' ) );
+		$this->assertEquals( 'http://[::127.0.0.1]', esc_url( 'http://[::127.0.0.1]' ) );
+		$this->assertEquals( 'http://[::DEAD:BEEF:DEAD:BEEF:DEAD:BEEF:DEAD:BEEF]', esc_url( 'http://[::DEAD:BEEF:DEAD:BEEF:DEAD:BEEF:DEAD:BEEF]' ) );
+
+		// IPv6 with square brackets in the query? Why not.
+		$this->assertEquals( '//[::FFFF::127.0.0.1]/?foo%5Bbar%5D=baz', esc_url( '//[::FFFF::127.0.0.1]/?foo[bar]=baz' ) );
+		$this->assertEquals( 'http://[::FFFF::127.0.0.1]/?foo%5Bbar%5D=baz', esc_url( 'http://[::FFFF::127.0.0.1]/?foo[bar]=baz' ) );
+	}
+
 }