Second MAC address to a network adapter

savago

It is a possible to add second MAC address to a network adapter or create virtual network interfaces with separate mac addresses ?
In linux especially openwrt i use macvlan


ip link add link eth1 eth2 type macvlan
ifconfig eth2 hw ether 00:24:01:f5:1b:84

ip link add link eth1 eth3 type macvlan
ifconfig eth3 hw ether 00:24:01:f5:1b:85

ip link add link eth1 eth4 type macvlan
ifconfig eth4 hw ether 00:24:01:f5:1b:86

ip link add link eth1 eth5 type macvlan
ifconfig eth5 hw ether 00:24:01:f5:1b:87

ip link add link eth1 eth6 type macvlan
ifconfig eth6 hw ether 00:24:01:f5:1b:88

stephenw10

You can probably use virtual IP alias for this:
http://doc.pfsense.org/index.php/What_are_Virtual_IP_Addresses%3F

I'm not entirely sure if the MAC address is inherited though. :-\

Steve

savago

With aliases i can add IP addresses to an interface,but with same mac. In my scenario i need each one IP addresses has different mac.

cmb

only way to do that is with CARP IPs, they use virtual MACs determined by the VHID chosen.

spiritbreaker

Hi cmb,

i got same Problem..my ISP assigns IP via mac address. To use a second Ip u need a second mac address.

I solved it by using a switch between ISP Modem and Pfsense. Then i connect 2 physical PfSsense interfaces to the switch (WAN and WAN2).
The sticking point is that 2 WAN connections share one real internet connection. Then u cant use trafficshaper properly right?

To use a CARP MAC address is not really useful if it changes on every reboot.

Maybe there is a solution -> http://www.melen.org/u/jan/wp/?p=82.

Is it applicable to pfsense?

cya

cmb

CARP MACs never change, but they can't be used to pull IPs from DHCP. You can just add another physical NIC for that though.

spiritbreaker

Hi cmb,

thx for reply… yeah i know :( but i figured out that my problem is there http://forum.pfsense.org/index.php/topic,52196.0.html

Hope u can help me.

ty cya