freebsd stable - Aug 2017 - SLAAC not working

Greg Rivers <gcr+freebsd-stable at tharned.org> wrote
  in <1557648.beBEYmqKBO at flake.tharned.org>:

gc> On Monday, August 07, 2017 15:57:04 Andrey V. Elsukov wrote:
gc> > So, set net.inet6.icmp6.nd6_debug=1 and show what you have in the
gc> >  ndp -p
gc> >  ndp -r
gc> >  ndp -i lagg0
gc> >
gc> # sysctl net.inet6.icmp6.nd6_debug=1
gc> net.inet6.icmp6.nd6_debug: 0 -> 1
gc> # suspend
gc> [1] + Stopped (SIGSTOP)        su -
gc> $ ndp -p
gc> fe80::%lagg0/64 if=lagg0
gc> flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
gc>   No advertising router
gc> fe80::%lo0/64 if=lo0
gc> flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
gc>   No advertising router
gc> $ ndp -r
gc> $ ndp -i lagg0
gc> linkmtu=0, maxmtu=0, curhlim=64, basereachable=30s0ms, reachable=31s,
gc> retrans=1s0ms
gc> Flags: nud accept_rtadv auto_linklocal
gc>
gc> Clearly there's no SLAAC action. I can't find any NDP debug
messages
gc> in the kernel message log or in the syslog. Where might they be going?

 The configuration looks correct to me, but two questions:

 1. Does "sysctl net.inet6.ip6.forwarding" command show "0"?

 2. What is shown by the command "ping6 ff02::1%lagg0" and "rtsol
-dD lagg0"?

-- Hiroki
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On Wednesday, August 09, 2017 16:26:50 Hiroki Sato
wrote:
> The configuration looks correct to me, but two questions:
> 
>  1. Does "sysctl net.inet6.ip6.forwarding" command show
"0"?
> 
$ sysctl net.inet6.ip6.forwarding
net.inet6.ip6.forwarding: 0
>  2. What is shown by the command "ping6 ff02::1%lagg0" and
"rtsol -dD lagg0"?
>
$ ping6 -c 2 ff02::1%lagg0
PING6(56=40+8+8 bytes) fe80::ae16:2dff:fe1e:b880%lagg0 --> ff02::1%lagg0
16 bytes from fe80::ae16:2dff:fe1e:b880%lagg0, icmp_seq=0 hlim=64 time=0.181 ms
16 bytes from fe80::f415:63ff:fe2b:ea06%lagg0, icmp_seq=0 hlim=64 time=0.263
ms(DUP!)
16 bytes from fe80::f415:63ff:fe2b:e806%lagg0, icmp_seq=0 hlim=64 time=0.318
ms(DUP!)
16 bytes from fe80::8edc:d4ff:feaf:8938%lagg0, icmp_seq=0 hlim=64 time=0.369
ms(DUP!)
16 bytes from fe80::f415:63ff:fe2b:e806%lagg0, icmp_seq=0 hlim=64 time=0.803
ms(DUP!)
16 bytes from fe80::ae16:2dff:fe1e:e998%lagg0, icmp_seq=0 hlim=64 time=0.868
ms(DUP!)
16 bytes from fe80::ae16:2dff:fe1e:49f8%lagg0, icmp_seq=0 hlim=64 time=0.922
ms(DUP!)
16 bytes from fe80::226:55ff:fe2f:40a4%lagg0, icmp_seq=0 hlim=64 time=0.971
ms(DUP!)
16 bytes from fe80::f415:63ff:fe2b:ea06%lagg0, icmp_seq=0 hlim=64 time=2.144
ms(DUP!)
16 bytes from fe80::f415:63ff:fe2b:e806%lagg0, icmp_seq=0 hlim=64 time=4.154
ms(DUP!)
16 bytes from fe80::f415:63ff:fe2b:e806%lagg0, icmp_seq=0 hlim=64 time=4.220
ms(DUP!)
16 bytes from fe80::ae16:2dff:fe1e:b880%lagg0, icmp_seq=1 hlim=64 time=0.222 ms

--- ff02::1%lagg0 ping6 statistics ---
2 packets transmitted, 2 packets received, +10 duplicates, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.181/1.286/4.220/1.396 ms
$ fg
su -
# rtsol -dD lagg0
checking if lagg0 is ready...
lagg0 is ready
set timer for lagg0 to 1s
New timer is 1s
timer expiration on lagg0, state = 1
send RS on lagg0, whose state is 2
set timer for lagg0 to 4s
New timer is 4s
timer expiration on lagg0, state = 2
send RS on lagg0, whose state is 2
set timer for lagg0 to 4s
New timer is 4s
timer expiration on lagg0, state = 2
send RS on lagg0, whose state is 2
set timer for lagg0 to 1s
New timer is 1s
timer expiration on lagg0, state = 2
No answer after sending 3 RSs
stop timer for lagg0
there is no timer

-- 
Greg Rivers