Something broken with libdnet? Or FreeBSD 9.0-RC1?

[GomoR]

Hello list,

I was updating one of my Perl module (Net::Libdnet), and came accross a bug under FreeBSD 9.0-RC1 and libdnet.
My setup is one interface configured with multiple aliases. See details at the end of the message.
One host works ok (FreeBSD 8.2-RELEASE), and another fails to find correct IP information (FreeBSD 9.0-RC1).

The main bug is that under 9.0-RC1, libdnet fails to find the correct inet address for the interface. It gets the first alias instead. I don't know if the bug comes from libdnet or 9.0-RC1, so I let knowledgeable people here to look at it (or not).

For those who want to test, you can install libdnet from /usr/ports/net/libdnet.


Host FreeBSD 8.2-RELEASE (ok):

% ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
        ether MAC_ADDR
        inet PUBLIC_IP4 netmask 0xffffff00 broadcast PUBLIC_IP4.255
        inet6 LOCAL_IP6%re0 prefixlen 64 scopeid 0x1 
        inet 192.168.0.10 netmask 0xffffffff broadcast 192.168.0.10
[...many aliases...]
        inet6 PUBLIC_IP6::2 prefixlen 128 
        inet6 PUBLIC_IP6::3 prefixlen 128 
        inet6 PUBLIC_IP6::4 prefixlen 128 
        inet6 PUBLIC_IP6::5 prefixlen 128 
        inet6 PUBLIC_IP6::1 prefixlen 56 

% dnet intf get re0
re0: flags=0x31<UP,BROADCAST,MULTICAST> mtu 1500
        inet PUBLIC_IP4/24
        link MAC_ADDR
        alias fe80:1::21c:c0ff:feca:1178/64
        alias 192.168.0.10
[...many aliases...]
        alias PUBLIC_IP6::2/0
        alias PUBLIC_IP6::3/0
        alias PUBLIC_IP6::4/0
        alias PUBLIC_IP6::5/0
        alias PUBLIC_IP6::1/0


Host FreeBSD 9.0-RC1 (not ok):

% ifconfig re0
re0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
	ether MAC_ADDR
	inet 192.168.2.10 netmask 0xffffffff broadcast 192.168.2.10
[...many aliases...]
	inet 192.168.1.148 netmask 0xffffff00 broadcast 192.168.1.255
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active

% dnet intf get re0
re0: flags=0x31<UP,BROADCAST,MULTICAST> mtu 1500
	inet 192.168.2.10
	link MAC_ADDR
	alias 192.168.2.11
	alias 192.168.2.12
	alias 192.168.2.13
	alias 192.168.2.14
	alias 192.168.1.148  # Correct inet address

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