All Cisco Meraki networking devices are capable of passing IPv6 traffic, limited to the per-product specifics outlined below.
MR Access Points
If enabled, Cisco Meraki access points can pass clients' IPv6 traffic. This option can be configured under Network-wide > General > Device configuration > IPv6 Bridging.
Note: IPv6 can only be used on SSIDs in bridge mode.
MX Security Appliance and Teleworker Gateways
Cisco Meraki security appliances can pass IPv6 traffic in pass-through mode, but no traffic analysis or manipulation is possible when using IPv6. At this time, IPv6 traffic cannot be routed or passed along a VPN tunnel.
Cisco Meraki Switches can pass IPv6 traffic, as well as report information on clients using IPv6. Switch clients' IPv6 address and IPv6 address (link local) can be added as columns on the clients usage page.
Note: IPv4 is still required for Meraki management traffic to/from the cloud.
IPv6 ACLs are supported in MS firmware versions 10.0 and newer. Prior to MS 10.0, IPv4 only ACLs were configured on the Switch > IPv4 ACL page. IPv4 and IPv6 access lists are now configured under Switch > Configure > ACL. For more information, reference the Configuring ACLs and Switch ACL Operation articles.
Note: MS22/42/220/320 do not support IPv6 Access Lists at this time.