https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248172
Bjoern A. Zeeb <b...@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|Open |In Progress
CC| |h...@freebsd.org
--- Comment #22 from Bjoern A. Zeeb <b...@freebsd.org> ---
Gert, can you try this patch (totally untested, not even compile tested):
https://people.freebsd.org/~bz/tmp/20201031-02-ip6-ifdisabled.diff
This will enable ND6_IFF_IFDISABLED when the interface is created in the kernel
before return to user space (if I am right) and user space (driver from devd ->
/etc/pccard_ether => ... netif start IF => ifdisabled should no longer execute
the last bit and hence not race with your program.
I might have seen a similar issue with ppp/tun0 lately.
Also adding @hrs to Cc: as he know this logic a lot better than me and might
know of other pitfalls by doing this.
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