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Date:      Tue, 13 Jan 2009 15:09:11 +0200
From:      "Eitan Shefi" <eitans@mellanox.co.il>
To:        <freebsd-net@freebsd.org>
Subject:   When configuring 2 VLANs to be on the same subnet, only one works.
Message-ID:  <5D49E7A8952DC44FB38C38FA0D758EAD0173629B@mtlexch01.mtl.com>

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I'm testing a NIC driver.
I use 2 directly connected FreeBSD-7.0 hosts.
When I create 2 VLANs for the same interface (mtnic0), on each host, and
configure the VLANs on each host to be on the same subnet:
ping works only to one of the VLANs.
=20
I run:
On sw259:=20
/sbin/ifconfig vlan1 create vlan 1 vlandev mtnic0
/sbin/ifconfig vlan2 create vlan 2 vlandev mtnic0
/sbin/ifconfig vlan1 91.154.12.5 netmask 255.0.0.0
/sbin/ifconfig vlan2 91.155.12.5 netmask 255.0.0.0
=20
On sw260:=20
/sbin/ifconfig vlan1 create vlan 1 vlandev mtnic0
/sbin/ifconfig vlan2 create vlan 2 vlandev mtnic0
/sbin/ifconfig vlan1 91.154.12.6 netmask 255.0.0.0
/sbin/ifconfig vlan2 91.155.12.6 netmask 255.0.0.0
=20
Now on sw259 run:=20
ping 91.154.12.6 - works.=20
ping 91.155.12.6 - does not work.=20
=20
I saw the same behavior also when running via a different NIC.
=20
=20
Is this expected ?
=20
=20
Thanks,
Eitan.



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