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Guest WLAN not working correctly when LAN set to 9000 MTU

JeffreyLewcock

Hi All

Hope you can help with this.

I'm using UTM 9.703-3, I have created the default Guest WLAN (wlan0) and a Private WLAN bridged to my LAN.

wlan0 has a DHCP server and masq to the internet.

The problem is the when I set the LAN interface MTU to 9000 the clients on the Guest wifi lose connectivity to the internet.

If I set the LAN MTU back to 1500 all works fine

The does not seem to be any problem with the LAN bridged Private wifi.

Has anybody know why this is or how to troubleshoot or fix ?

Thanks

Jeff



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