icmp redirect at layer 3

is it possible to inject ICMP redirect messages at LIBNET_RAW4 level ?

I remember to have tried it, but I got an "operation not permitted" 
error from the kernel. so I've opted for the LIBNET_LINK level which, in 
turn, works fine.

is this correct ?  is this a kernel limitation ?

thanks

-- 

    --==> ALoR <==---------------------- -  -   -

  There are only 10 types of people in this world...
  Those who understand binary, and those who don't.