Am 23.07.20 um 14:19 schrieb Gert Doering: > On FreeBSD 12 (tested and verified on 12.1-RELEASE-p2), after "ifconfig > inet6" for a tun/tap interface, there sometimes is a race condition > where the "IFDISABLED" flag shows up after a short time frame, under > a second, and never clears itself. This disables use of the configured > IPv6 address on the interface, breaking IPv6 over tun/tap operation. > > This only happens if ipv6_activate_all_interfaces="YES" is not > set in /etc/rc.conf - but there might be reasons why this is not so. > > As a workaround until this can be fixed on the FreeBSD side (or a > better workaround is found), sleep(1) after ifconfig, then call > "ifconfig $dev inet6 -ifdisable". > > Yes, this is massively ugly but makes the problem completely go > away for my test systems. > > (The same effect can be achieved with an --up script that does this, > but it's even less pretty - see trac ticket) > > FreeBSD: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248172 > > v2: reword text, refer to FreeBSD bug with much more details
Acked-By: Arne Schwabe <a...@rfc2549.org> This looks like a ugly workaround but if it is the best we can, so be it. Arne
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