Inline nested anchors issue

[sousa]

Hello,

I've been playing with anchors and ran into an issue.

 --------                               ------
|        |wpi0                     ath0|      |
| Laptop |-----------------------------|  AP  |
|        |192.168.2.60      192.168.2.1|      |
 --------                               ------

With this pf.conf on the access point, I can ping ath0 from a wireless client. The client has pf disabled.

set block-policy return
set skip on lo

block all
anchor "wireless" on ath0 {
    pass in all
}

If I [only] change the anchor as shown below, it still works.

anchor in {
    pass in all
}

When I nest anchors, it stops working.

anchor "wireless" on ath0 {
    anchor in {
        pass in all
    }
}

I'm unsure on whether this is a bug or if I'm missing something.
I did not try this on -current, only on 4.7-stable.

Any pointers/insights?

Thanks.