Re: error from ntpd upon IPv6 address receipt/bind

[Chris Ross <cross+netbsd%distal.com@localhost>]

On May 12, 2010, at 2:26 PM, Greg Troxel wrote:
> I haven't tried ntpd and autohost.
> 
> Does the socket end up created ('fstat|egrep ntpd')?
> 
> It's possible it tries twice and the second fails.
> You should see one on fe80, one on real.

  Yup, it does seem to work.  fstat shows many internet and internet6 sockets, 
and a route socket.

root     ntpd         238   wd /              2 drwxr-xr-x     512 r 
root     ntpd         238    0 /          30380 crw-rw-rw-    null rw
root     ntpd         238    1 /          30380 crw-rw-rw-    null rw
root     ntpd         238    2 /          30380 crw-rw-rw-    null rw
root     ntpd         238    3* unix dgram 279c380 <-> 279c680
root     ntpd         238   20* internet dgram udp 276dec0 *:123
root     ntpd         238   21* internet6 dgram udp 2773e00 *:123
root     ntpd         238   22* internet dgram udp 276de00 206.138.151.41:123
root     ntpd         238   23* internet6 dgram udp 2773d10 
[fe80::203:baff:fe05:e47a%tlp0]:123
root     ntpd         238   24* internet dgram udp 276dd40 127.0.0.1:123
root     ntpd         238   25* internet6 dgram udp 2773c20 [::1]:123
root     ntpd         238   26* internet6 dgram udp 2773b30 [fe80::1%lo0]:123
root     ntpd         238   27* route raw 0 276a8c0
root     ntpd         238   28* internet6 dgram udp 2773950 
[2001:5c0:1101:420:203:baff:fe05:e47a]:123

> Does restarting ntpd after you have an address work?

  Well, I must admit, I've never even verified that ntpd doesn't work.  Just 
that I get those error messages on console.  :-)

  I can confirm that I don't see the errors when I stop and restart ntpd.  Ooh, 
interesting, the fstat output changed:

root     ntpd         852   wd /              2 drwxr-xr-x     512 r 
root     ntpd         852    0 /          30380 crw-rw-rw-    null rw
root     ntpd         852    1 /          30380 crw-rw-rw-    null rw
root     ntpd         852    2 /          30380 crw-rw-rw-    null rw
root     ntpd         852    3* unix dgram 2aeb680 <-> 279c680
root     ntpd         852   20* internet dgram udp 276dd40 *:123
root     ntpd         852   21* internet6 dgram udp 2773950 *:123
root     ntpd         852   22* internet dgram udp 276de00 206.138.151.41:123
root     ntpd         852   23* internet6 dgram udp 2773b30 
[fe80::203:baff:fe05:e47a%tlp0]:123
root     ntpd         852   24* internet6 dgram udp 2773c20 
[2001:5c0:1101:420:203:baff:fe05:e47a]:123
root     ntpd         852   25* internet dgram udp 276dec0 127.0.0.1:123
root     ntpd         852   26* internet6 dgram udp 2773d10 [::1]:123
root     ntpd         852   27* internet6 dgram udp 2773e00 [fe80::1%lo0]:123
root     ntpd         852   28* route raw 0 276b5e0


  Notice that the 'route' is now the last, and the internet6 udp socket on the 
routable address is earlier in the list.


                                    - Chris