a problem with ifconfig and NOTRAILERS

[miki leon]

Hi

i have a lancard that i mtrying to change to
be a TRAILERS .

when i do ifconfig lan1 i can see that the param is NOTRAILERS .

when i try to change ti with the command :
ifconfig lan1 -trailers
ifconfig lan1 -trailers up

it doenst change and i m getting the same result

[Armin Feller · Accepted solution]

Hi,

if you check the file /usr/include/net/if.h you will only find the NOTRAILERS flag, so maybe TRAINLERS is not supported?!

Regards ...
Armin

[rick jones]

Indeed, trailers were deprecated (obsoleted) long ago. They were removed from the manpage, but perhaps not from the options parser of ifconfig.

That NOTRAILERS still appears in the output of ifconfig is likely for backwards compatibility with scripts that might be parsing the output.