On Tue, Jul 22, 2014 at 05:28:46PM -0300, Felipe Mesquita de Oliveira wrote:
> 
> # ifconfig pppoe0
> pppoe0: flags=28855<UP,DEBUG,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST,NOINET6>
> mtu 1492
>         priority: 0
>         dev: bge0 state: PADI sent
>         sid: 0x0 PADI retries: 7 PADR retries: 0
>         sppp: phase establish authproto pap authname "x...@xxx.com.br"
>         groups: pppoe
>         status: no carrier
>         inet 0.0.0.0 --> 0.0.0.1 netmask 0xffffffff
> 
> 
> I've seen some messages discussing this, like this one:
> http://comments.gmane.org/gmane.os.openbsd.misc/212649

The problem in the link was related to PPPoE over VLAN using a rl(4) card as 
physical interface.
It seems to be caused by the card being unable to do VLAN tag 
insertion/stripping in hardware.
After changing to a em(4) card, the problem was simply gone for me.

Since your pppoe0 uses bge(4) and no VLAN, it has to be caused by something 
else.
Like others suggested, capture the PPPoE negotiation using tcpdump and look for 
oddities like wrong MACs.

Best Regards,
Thorsten

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