Wise Pds

I have the Keenetic router inside a LAN network where the main router is PFSENSE. The network uses MTU 9000 (Jumbo frames) but in the WAN port of the keenetic router can only be configured as maximum 1500. Is it possible to add jumbo frames to the O.S.? Many of us use the keenetic routers not as main router but as routers within a larger installation where the main router is above and the keenetic router being routers acts as "AP" but with extra additions such as firewall... AP mode lost a ton of features so... we used them on router mode. Is it possible to add it? Thanks! Translated with DeepL.com (free version)

I know that.. but why i can't import my certificate generated for example with pfsense?

I have a Pfsense router and connected to it a Keenetic Titan router as an access point (But in ROUTER mode, because I need the firewall). I want to be able to login via the Keenetic router wan ip using HTTPS (Inside the LAN) for example with IP:192.168.1.20:8001 and be able to import my autogenerated certificate in PFSENSE to be able to login without using the Keenetic DDNS. For example creating a DNS redirection in PFSENSE from domain example.lab.com to ip 192.168.1.20. I can do this on Asus, Netgear, Tp-link routers, how can I not do it here? I have searched all possible ways and I can't do it. I want login into my keenetic titan router wan port from a lan ip (For example from a computer 192.168.1.100 to my keenetic router 192.168.1.20) Can you implement HTTPS WAN access for any source and import certificate? Thanks!

2X Keenetic titan kn-1812. Router + mesh node. I have a main 5ghz wireless segment (Cloudata), another with 2.4ghz (Domo) and last with 5ghz (Qled). If i turn on ACL on main segment (Cloudata) with whitelist to only accept my mobile phone, my oneplus 13 shows wifi6. Sync speed about 1200 Mbps If i turn off ACL wifi 7 is back. sync Speed 2400Mbps Tested 10 times. ACL on: Wifi 6 ACL off Wifi 7.