[Serdev] Can the function is_to_local be added to the domain module

[Juha Heinanen]

Klaus Darilion writes:

 > 	# request from non local user? is only allowed if loose routing
 >      is used  and to tag is present
 > 	if ( is_present_hf("Route") && has_totag() ) {
 > 		xlog("L_INFO", "%is [%Tf]: %rm %fu -> %ru: relaying allowed because 
 > route header is present\n");

how much extra security does checking of presence of route header add,
since it is very easy to include one?

-- juha