struct ipt_entry_match *match = NULL, *mlength = NULL,*tmp=NULL;

//tmp = realloc( match, match->u.match_size + mlength->u.match_size );
tmp = realloc( mlength, mlength->u.match_size + match->u.match_size );
if( tmp ){
//memcpy( tmp + mlength->u.match_size, mlength, mlength->u.match_size );
memcpy( tmp + match->u.match_size, match, match->u.match_size );
match=malloc(tmp->u.match_size );
memcpy(match, tmp, tmp->u.match_size );
}


if(match) memcpy(chain_entry->elems, match,match->u.match_size);