added info on mfirewall ipv6 (#22997)

Author: marciocloudflare

src/content/docs/magic-transit/how-to/ipv6.mdx

@@ -25,7 +25,7 @@ Cloudflare transports IPv6 traffic over an IPv6-over-IPv4 GRE tunnel. Here is ho
 
 - The IPv6 beta is not available for accounts with CNI links configured.
 - MTU is 1420 bytes for egress traffic (does not impact Direct Server Return).
-- Magic Firewall currently does not support IPv6.
+- Magic Firewall supports two matching fields for IPv6 traffic: source IP address and destination IP address.
 - Cloudflare supports the advertisement of IPv6 prefixes ranging from `/48` to `/32`.
 - Limited to IPv4-based [tunnel health checks](/magic-transit/reference/tunnel-health-checks/) only.
 - Supports only IPv4-based endpoint health checks.