[ntp:questions] IPv6 link local

Brandon Applegate brandon at burn.net
Thu Dec 17 21:09:16 UTC 2015


> On Dec 16, 2015, at 4:45 PM, Greg Dowd <Greg.Dowd at microsemi.com> wrote:
> 
> Does open source ntpd support using IPv6 link local addresses for client/server/peer modes?  I have not been able to use link local addresses to peer 2 servers on the same subnet.
> 
> Thanks...Greg

Seems to be working for me.  Client is FreeNAS (stable, FreeBSD based).  Server is Linux.

[vom at freenas ~]$ ntpq -pn
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
-104.131.51.97   43.77.130.254    2 u   13   64    3   47.304   14.793   1.982
+96.44.142.5     164.244.221.197  2 u   11   64    3   51.424    2.814   6.833
+72.249.38.88    204.123.2.72     2 u   10   64    3   44.757    2.578  13.842
*fe80::fa32:e4ff .GPS.            1 u    9   64    3    0.107   -3.370   0.943

[vom at freenas ~]$ ntpq -c version
ntpq 4.2.4p5-a (1)

Make sure you are putting the %iface qualifier on the address.  For me - this is re0 in FreeBSD, so:

fe80::fa32:e4ff:feXX:XXXX%re0

--
Brandon Applegate - CCIE 10273
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