[Bug 286322] IPv6 doesn't work across different FIBs (epair)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286322

--- Comment #4 from Paige Thompson <paige@paige.bio> ---
(In reply to Lexi Winter from comment #2)

allfibs was set to 0 and I did just double check: 

root@FBSDDEV1:/home/admin # sysctl -a | grep "add_addr_allfibs"
WARNING: Adding ifaddrs to all fibs has been turned off by default. Consider
tuning net.add_addr_allfibs if needed
net.add_addr_allfibs: 0
root@FBSDDEV1:/home/admin # 

root@FBSDDEV1:/home/admin # ifconfig epair128 create
epair128a
root@FBSDDEV1:/home/admin # ifconfig epair128b  fib 128
root@FBSDDEV1:/home/admin # ifconfig epair128b inet6 fcff::b/64 
root@FBSDDEV1:/home/admin # ifconfig epair128a inet6 fcff::a/64
root@FBSDDEV1:/home/admin # ping6 fcff::b
PING(56=40+8+8 bytes) fcff::b --> fcff::b
^C
--- fcff::b ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
root@FBSDDEV1:/home/admin # 

root@FBSDDEV1:/home/admin # sysctl net.inet6.ip6.rfc6204w3
net.inet6.ip6.rfc6204w3: 0


BTW I also experienced a kernel panic at one point but I did not catch the
stack trace as it was configured to reboot on panic at the time and I was not
able to reproduce it but there is definitely something there.

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