VLANs not coming up after reboot (Nas4Free)

Here is a copy / paste of my post from their forums, maybe someone here can help me with this :

I am new to NAS4Free, and FreeBSD in general, so maybe someone here can give me a pointer.

I got a little bit of an issue. In installed Nas4Free on two physical servers. Each server is pretty much identical. Only difference is that one box is a 2U with 8 drive bays and one is a 16 drive bay servers and 3U.

Anyway, both servers got a dual onboard card. Initially I thought I am using bonding, but it isn't really needed as both ports going to the same switch so for now I am using one interface (igb0) for the management access (which works fine) and the other interface, igb1, I used for VLANs

The management interface is not tagged and is using the default VLAN of the switch.

Now I created two VLAN interfaces, one I want to use for its internal management (different subnet to igb0) and one for the actual storage subnet.

The problem is now that each time the server reboots, I need to "up" the igb1 interface. I tried to put the ifconfig command to "up" the interface into the rc.conf, but it seems any changes in the rc.conf are being removed / overwritten no matter what I put in there.

So any help is highly appreciated. Just as an FYI - the physical switch config is fine as Windows based installs work just fine, including VLAN tagging.

Here are some more infos (screenshots etc.)

san01: ~ # ifconfig
igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=401bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO>
        ether 00:30:48:cb:52:bc
        inet xx.xx.xx.xx netmask 0xffffffe0 broadcast 81.19.58.63
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
igb1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=401bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO>
        ether 00:30:48:cb:52:bd
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
ipfw0: flags=8801<UP,SIMPLEX,MULTICAST> metric 0 mtu 65536
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0xc
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
vlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=103<RXCSUM,TXCSUM,TSO4>
        ether 00:30:48:cb:52:bd
        inet 192.168.1.3 netmask 0xffffff00 broadcast 192.168.1.255
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        vlan: 40 parent interface: igb1
vlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=103<RXCSUM,TXCSUM,TSO4>
        ether 00:30:48:cb:52:bd
        inet 172.16.10.1 netmask 0xffffff00 broadcast 172.16.10.255
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        vlan: 30 parent interface: igb1