[Bug 228982] [panic] page fault in mld_v2_cancel_link_timers() on boot

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228982

--- Comment #2 from Andrey V. Elsukov <ae at FreeBSD.org> ---
(In reply to Matthew Macy from comment #1)
> This looks a lot more like it's tied to my deferred deletion of multicast
> addresses. Could you test with a kernel prior to my epoch changes? Also,
> could you give me a specific configuration that is most likely to produce
> the issue?

I update this host periodically, and never seen such panics before epoch
changes.
I can test some prior revision, but as I said it happens rarely.

I think relevant settings are:

cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto failover laggport em0 laggport re0 DHCP"
ifconfig_em0="up" # this port is unplugged
ifconfig_re0="up"
ipv6_activate_all_interfaces="YES"

And my local network usually have some IPv6 activity, at least IPv6 is enabled.

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