MikroTik RouterOS v2.9 Reference Manual page 119

This behaviour can be usefull, for example, if you want to assign dial-in (ppp, pppoe, pptp) clients
IP addresses from the same address space as used on the connected LAN.
Example
Consider the following configuration:
The MikroTik Router setup is as follows:
admin@MikroTik] ip arp> /interface ethernet print
Flags: X - disabled, R - running
# NAME
0 R eth-LAN
[admin@MikroTik] ip arp> /interface print
Flags: X - disabled, D - dynamic, R - running
# NAME
0 eth-LAN
1 prism1
2 D pppoe-in25
3 D pppoe-in26
[admin@MikroTik] ip arp> /ip address print
Flags: X - disabled, I - invalid, D - dynamic
# ADDRESS
0 10.0.0.217/24
1 D 10.0.0.217/32
2 D 10.0.0.217/32
[admin@MikroTik] ip arp> /ip route print
Flags: X - disabled, I - invalid, D - dynamic, J - rejected,
C - connect, S - static, R - rip, O - ospf, B - bgp
# DST-ADDRESS
0 S 0.0.0.0/0
Copyright 1999-2007, MikroTik. All rights reserved. Mikrotik, RouterOS and RouterBOARD are trademarks of Mikrotikls SIA.
Other trademarks and registred trademarks mentioned herein are properties of their respective owners.
MTU MAC-ADDRESS
1500 00:50:08:00:00:F5 proxy-arp
TYPE
ether
prism
pppoe-in
pppoe-in
NETWORK BROADCAST
10.0.0.0 10.0.0.255
10.0.0.230 0.0.0.0
10.0.0.231 0.0.0.0
G GATEWAY
r 10.0.0.1
ARP
MTU
1500
1500
INTERFACE
eth-LAN
pppoe-in25
pppoe-in26
DISTANCE INTERFACE
1 eth-LAN
Page 105 of 695