diff --git a/src/net/netip/netip.go b/src/net/netip/netip.go
index d709c56dfa..b613a5c82f 100644
--- a/src/net/netip/netip.go
+++ b/src/net/netip/netip.go
@@ -335,9 +335,7 @@ func parseIPv6(in string) (Addr, error) {
 		for j := i - 1; j >= ellipsis; j-- {
 			ip[j+n] = ip[j]
 		}
-		for j := ellipsis + n - 1; j >= ellipsis; j-- {
-			ip[j] = 0
-		}
+		clear(ip[ellipsis : ellipsis+n])
 	} else if ellipsis >= 0 {
 		// Ellipsis must represent at least one 0 group.
 		return Addr{}, parseAddrError{in: in, msg: "the :: must expand to at least one field of zeros"}