PF not routing traffic to IPv4 interface when IPv6 is enabled

[Ryan Phillips]

Hi all,

I just noticed that on my Freebsd server the PF firewall is not filtering
packets for ipv4.   Recently another admin enabled IPv6 within rc.conf, but
we never assigned an IP6 IP.  The interface has one IPv4 IP and many
aliases for other IP4 IPs we own.

# pfctl -v -s info

Interface Stats for nve0              IPv4             IPv6
Bytes In                               0            26037
Bytes Out                              0                0
Packets In
Passed                               0                0
Blocked                              0              292
Packets Out
Passed                               0                0
Blocked                              0                 0

Does anyone know why this is the case?

Regards,
Ryan