port-id-map

linux下的ppp协议簇开源代码； 可以进行linux内核级的pppoe拨号

#
# port-id-map
#
# This file describes the ttyname to port id mapping. The port id
# is reported as part of a RADIUS authentication or accouting request.
#
#ttyname (as returned by ttyname(3))	port-id
/dev/tty1	1
/dev/tty2	2
/dev/tty3	3
/dev/tty4	4
/dev/tty5	5
/dev/tty6	6
/dev/tty7	7
/dev/tty8	8
/dev/ttyS0	9
/dev/ttyS1	10
/dev/ttyS2	11
/dev/ttyS3	12
/dev/ttyS4	13
/dev/ttyS5	14
/dev/ttyS6	15
/dev/ttyS7	16