RPC1918 works on mx64 and not mx68: why?

[DuoSupra]

I have an mx64 rule that looks like this...

ALLOW, RPC1918, TCP, ANY, ANY, 192.168.128.0/24, ANY

I cannot put this rule into my mx68. It won't allow the IP subnet to be written out.

I have the same problem with a DNS rule...

ALLOW, Allow DNS, UDP, 192.168.128.253/32, ANY, ANY, 53

As I attempt to put in a destination value it flashes an error, "Invalid input. Must be one of the following types: Any, IPv6 CIDR or VLAN." That seems irrational for the DNS rule. I want to specify one domain controller.

Why? What changed?

Thanks in advance

[alemabrahao]

What works on one model works on the other, are you running the same version on both? Otherwise I suggest you open a support case.

[alemabrahao · Accepted solution]

Are you trying to set inbound rules?

 You have to use outbound rules.

https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/IPv6_Support_on_MX_Security_and_SDW....

[DuoSupra]

Wonderful. That was the issue.

I guess I got up too early this morning. Thank you!