ng_pptpgre + netmask_change results to lock

[Nikos Vassiliadis]

Hello everybody,

 I just managed to lock my box and I want to report it
in case it's known(or it helps in some way). It is a
6.2-STABLE from March 13. The procedure that triggers
the lock is simple:

1) Create a pptp tunnel.
2) Set is as your default gateway.
3) Play a bit with the netmask of the physical inteface.
In my case doing a few times:
ifconfig fxp0 192.168.1.71/16
ifconfig fxp0 192.168.1.71/24
locks the box.

It's the GENERIC kernel along with:
nik:0:~$ kldstat
Id Refs Address    Size     Name
 1   16 0xc0400000 70b690   kernel
 2    1 0xc0b0c000 5fa0     snd_ich.ko
 3    2 0xc0b12000 22c48    sound.ko
 4    1 0xc0b35000 598bc    acpi.ko
 5    1 0xc3863000 2000     green_saver.ko
 6    1 0xc38b7000 4000     ng_socket.ko
 7    8 0xc38bb000 a000     netgraph.ko
 8    1 0xc38cd000 3000     ng_iface.ko
 9    1 0xc38d8000 6000     ng_ppp.ko
10    1 0xc38f0000 4000     ng_vjc.ko
11    1 0xc38f6000 4000     ng_bpf.ko
12    1 0xc38fd000 2000     ng_tcpmss.ko
13    1 0xc38ff000 4000     ng_pptpgre.ko
14    1 0xc3903000 4000     ng_ksocket.ko

Anybody with a more recent -STABLE can confirm that
the problem is still there? or not?
Any thoughts before updating my /usr/src?

Thanks in advance, Nikos