I found this on my MX merkai and not sure if its OK
I have only WAN1 with both IP's V4, and V6
Is this OK and tried to disable IPv6 on my WAN could not find way to do that
I have complains of slow internet
Solved! Go to Solution.
Yes its disabled already for the VLAN
But the main issue is my WAN is getting V4 and V6 IP address at the same time using WAN1 only
Your MX is receiving an IPv6 address on the WAN because the ISP is distributing one via DHCP6.
There is no way to disable the MX from receiving this address.
If you believe it's causing an issue, contact your ISP and ask that they disable IPv6 on the link. Or you could try contacting Meraki support and see if they can disable it on the MX from the backend (not sure if this is possible or not)