lo0 not in ioctl( SIOCGIFCONF )

[Jens Rehsack]

Hi (resend because attachment forgotten ...),

I was searching why ports/net/p5-Net-Interface was not working as
expected and found some reasons. Most of them I can answer by implementing
some test code as attached, but now I'm wondering why em0 is shown twice
and lo0 is not included.
The same situation on another machine ..

--- BEGIN ifconfig -a (waldorf)
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
	ether 00:15:17:10:84:6c
	inet 10.62.10.3 netmask 0xffffff00 broadcast 10.62.10.255
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
em1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
	ether 00:15:17:10:84:6d
	media: Ethernet autoselect
	status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
	inet6 ::1 prefixlen 128
	inet 127.0.0.1 netmask 0xff000000
--- END ifconfig -a (waldorf)
./netif
em0
em0
em1

--- BEGIN ifconfig -a (STINGRAY)
ifconfig -a
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8<VLAN_MTU>
	ether 00:a0:c9:ce:c8:64
	inet 10.62.10.12 netmask 0xffffff00 broadcast 10.62.10.255
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8<VLAN_MTU>
	ether 00:a0:c9:ce:db:83
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33204
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
	inet6 ::1 prefixlen 128
	inet 127.0.0.1 netmask 0xff000000
vlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:a0:c9:ce:db:83
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
	vlan: 7 parent interface: fxp1
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1492
	inet 87.149.231.190 --> 217.0.119.167 netmask 0xffffffff
	Opened by PID 27503
--- END ifconfig -a (STINGRAY)
./netif32
fxp0
fxp0
fxp1

Why aren't lo0, vlan0 and tun0 not included? What can I do to get these
entries (portable way, please).

Best regards,
Jens