OS 10.4 - how to set mtu on stf0?

kennysk · kennysk #1 (**permalink**)

02-22-2007, 04:52 PM

I have a mac osx server acting as router/firewall for my home network. The interface (I assume created by setup assistant for connection sharing), stf0: has an MTU 1280 and I need to increase this. I tried:

sudo ifconfig stf0 mtu 1364
but it fails with ioctl set mtu: invalid argument.
(The same command can be used to set mtu on the other interfaces)

Does anyone know how I can increase mtu on stf0 ?

rman · rman #2 (**permalink**)

02-22-2007, 05:25 PM

Have you tried, sudo ifconfig mtu 1364.

I looked at my configuration and found that 1280 is my default. Looking at the man pages, I see:

mtu n - set the maximum transmission unit of the interface to n, default is interface specific. The MTU is used to limit the size of packets that are transmitted on an interface. Not all interfaces support setting the MTU, and some interfaces have range restrictions.

I am wondering if you can change stf0.

Frozenx07 · Frozenx07 #3 (**permalink**)

01-06-2009, 07:31 PM

Quote:

Originally Posted by kennysk

I have a mac osx server acting as router/firewall for my home network. The interface (I assume created by setup assistant for connection sharing), stf0: has an MTU 1280 and I need to increase this. I tried:

sudo ifconfig stf0 mtu 1364
but it fails with ioctl set mtu: invalid argument.
(The same command can be used to set mtu on the other interfaces)

Does anyone know how I can increase mtu on stf0 ?

I have the exact same problem. How can I change the stf0 MTU?

rman #2 (permalink)
Member Since: Dec 24, 2002 Location: Los Angeles, California Posts: 12,584 Mac Specs: 2 x 3.0GHz Quad-Core, 6GB OS X 10.6.8 \| 15in MacBook Pro 2.2GHz OS X 10.6.8 \| 64GB iPad 2 WiFi	02-22-2007, 05:25 PM Have you tried, sudo ifconfig mtu 1364. I looked at my configuration and found that 1280 is my default. Looking at the man pages, I see: mtu n - set the maximum transmission unit of the interface to n, default is interface specific. The MTU is used to limit the size of packets that are transmitted on an interface. Not all interfaces support setting the MTU, and some interfaces have range restrictions. I am wondering if you can change stf0. Life isn't about waiting for the storm to pass, It's about learning to dance in the rain!
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kennysk #1 (permalink)
Member Since: Feb 22, 2007 Posts: 1	02-22-2007, 04:52 PM I have a mac osx server acting as router/firewall for my home network. The interface (I assume created by setup assistant for connection sharing), stf0: has an MTU 1280 and I need to increase this. I tried: sudo ifconfig stf0 mtu 1364 but it fails with ioctl set mtu: invalid argument. (The same command can be used to set mtu on the other interfaces) Does anyone know how I can increase mtu on stf0 ?
	QUOTE Thanks

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