[mpls-linux-general] Alias ethernet interface

[Carlos M. K. <ba...@gm...>]

 Hi.
Is it possible to use alias ethernet in mpls LSPs?
I'm trying the following:

# ifconfig
...
eth2 Encapsulamento do Link: Ethernet Endere=E7o de HW 00:40:05:31:45:27
inet end.: 192.168.28.1 <http://192.168.28.1>
Bcast:192.168.28.31<http://192.168.28.31>Masc:
255.255.255.224 <http://255.255.255.224>
UP BROADCASTRUNNING MULTICAST MTU:1500 M=E9trica:1
RX packets:65275 errors:78 dropped:0 overruns:0 frame:2
TX packets:68281 errors:0 dropped:0 overruns:0 carrier:0
colis=F5es:12900 txqueuelen:1000
RX bytes:72749368 (69.3 MiB) TX bytes:54638965 (52.1 MiB)
IRQ:10 Endere=E7o de E/S:0xe000

eth2:1 Encapsulamento do Link: Ethernet Endere=E7o de HW 00:40:05:31:45:27
inet end.: 192.168.29.1 <http://192.168.29.1>
Bcast:192.168.29.31<http://192.168.29.31>Masc:
255.255.255.224 <http://255.255.255.224>
UP BROADCASTRUNNING MULTICAST MTU:1500 M=E9trica:1
IRQ:10 Endere=E7o de E/S:0xe000
...

# mpls nhlfe add key 0
Key: 0x00000006
# mpls nhlfe change key 6 instructions push gen 10000 nexthop eth2 ipv4
192.168.28.2 <http://192.168.28.2>
# mpls nhlfe show
NHLFE entry key 0x00000006 mtu 1496 propagate_ttl
push gen 10000 set eth2 ipv4 192.168.28.2 <http://192.168.28.2> (0 bytes, 0
pkts, 0 dropped)

# mpls nhlfe add key 0
Key: 0x00000007
# mpls nhlfe change key 7 instructions push gen 10001 nexthop eth2:1 ipv4
192.168.29.2 <http://192.168.29.2>
RTNETLINK answers: Operation not permitted
# mpls nhlfe show
NHLFE entry key 0x00000007 mtu 0 propagate_ttl
(0 bytes, 0 pkts, 0 dropped)
NHLFE entry key 0x00000006 mtu 1496 propagate_ttl
push gen 10000 set eth2 ipv4 192.168.28.2 <http://192.168.28.2> (0 bytes, 0
pkts, 0 dropped)


eth2 works fine, but eth2:1 does not.
Does anybody knows what "RTNETLINK answers: Operation not permitted" means?

TIA.