[lwip-users] Do not fragment (DF) in a UDP transmission.

[Roger Cover]

Greetings,

I am writing a video transmitter. The protocol I am using requires that a "test 
packet" has its do not fragment bit set. This is used to determine the maximum 
usable MTU of the intervening network nodes.

I would like to know the recommended method for setting this bit in my UDP 
transmission. I am currently using the ip_output_if() function, and it does not 
have any arguments to allow this.

Regards,
Roger W. Cover