From owner-freebsd-net@FreeBSD.ORG  Wed Jan  4 02:36:14 2012
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Date: Wed, 4 Jan 2012 03:36:00 +0100
From: Pawel Tyll <ptyll@nitronet.pl>
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Subject: NDP Problem
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Hi lists,

I'm observing something strange.

ipv6_enable="YES"
ipv6_gateway_enable="YES"
ipv6_network_interfaces="vlan3901"
ipv6_ifconfig_vlan3901="2001:7f8:42::a503:9310:1/64"

vlan3901: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3<RXCSUM,TXCSUM>
        ether 00:15:17:38:13:7f
        inet6 fe80::92e2:baff:fe02:20bc%vlan3901 prefixlen 64 scopeid 0xf
        inet 195.182.218.230 netmask 0xfffffe00 broadcast 195.182.219.255
        inet6 2001:7f8:42::a503:9310:1 prefixlen 64
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        vlan: 3901 parent interface: igb1

NDP doesn't work.

After adding a static entry with ndp -s, communication is possible.
net.inet6.ip6.fw.enable: 0

Any ideas? :)

Pawel.