diff --git a/libexec/rc/rc.conf b/libexec/rc/rc.conf
index 6689a2ab85dd..62756fece201 100644
--- a/libexec/rc/rc.conf
+++ b/libexec/rc/rc.conf
@@ -263,8 +263,8 @@ icmp_log_redirect="NO"		# Set to YES to log ICMP REDIRECT packets
 network_interfaces="auto"	# List of network interfaces (or "auto").
 cloned_interfaces=""		# List of cloned network interfaces to create.
 #cloned_interfaces="gif0 gif1 gif2 gif3" # Pre-cloning GENERIC config.
-#ifconfig_lo0="inet 127.0.0.1"	# default loopback device configuration.
-#ifconfig_lo0_alias0="inet 127.0.0.254 netmask 0xffffffff" # Sample alias entry.
+#ifconfig_lo0="inet 127.0.0.1/8"	# default loopback device configuration.
+#ifconfig_lo0_alias0="inet 127.0.0.254/32" # Sample alias entry.
 #ifconfig_em0_ipv6="inet6 2001:db8:1::1 prefixlen 64" # Sample IPv6 addr entry
 #ifconfig_em0_alias0="inet6 2001:db8:2::1 prefixlen 64" # Sample IPv6 alias
 #ifconfig_em0_name="net0"	# Change interface name from em0 to net0.