in6_pfx_newpersistaddr: %s is already configured

[Dan Oachs]

I do not see any errors like that in my system.log.  Also running MacOS 
10.9.  The laptop I looked at has IPv6 from RA here at work and also 
uses RA from an Apple router at home with a HE tunnel.

     Thanks,
         Dan Oachs



On 12/03/2013 02:09 PM, Jared Mauch wrote:
> Anyone seen these logs on their machines?
>
> I get a fairly consistent set of syslogs on my machines (MacOS 10.9) each time I get a RA from my cable modem.
>
> 14:18:13.209477 20:e5:2a:b8:10:cf > 33:33:00:00:00:01, ethertype IPv6 (0x86dd), length 174: (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::22e5:2aff:feb8:10cf > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 120
> 	hop limit 64, Flags [managed, other stateful], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
> 	  source link-address option (1), length 8 (1): 20:e5:2a:b8:10:cf
> 	    0x0000:  20e5 2ab8 10cf
> 	  prefix info option (3), length 32 (4): 2601:4:2180:300::/64, Flags [onlink, auto], valid time 345600s, pref. time 345600s
> 	    0x0000:  40c0 0005 4600 0005 4600 0000 0000 2601
> 	    0x0010:  0004 2180 0300 0000 0000 0000 0000
> 	  unknown option (24), length 24 (3):
> 	    0x0000:  3800 0005 4600 2601 0004 2180 0300 0000
> 	    0x0010:  0000 0000 0000
> 	  rdnss option (25), length 40 (5):  lifetime 1200s, addr: 2001:558:feed::2 addr: 2001:558:feed::1
> 	    0x0000:  0000 0000 04b0 2001 0558 feed 0000 0000
> 	    0x0010:  0000 0000 0002 2001 0558 feed 0000 0000
> 	    0x0020:  0000 0000 0001
>
> Dec  3 14:57:43 Jareds-NTT-iMac kernel[0]: in6_pfx_newpersistaddr: 2601:4:2180:300:426c:8fff:fe33:d4b0 is already configured!
> Dec  3 14:58:13 Jareds-NTT-iMac kernel[0]: in6_pfx_newpersistaddr: 2601:4:2180:300:426c:8fff:fe33:d4b0 is already configured!
> Dec  3 14:58:43 Jareds-NTT-iMac kernel[0]: in6_pfx_newpersistaddr: 2601:4:2180:300:426c:8fff:fe33:d4b0 is already configured!
> Dec  3 14:59:13 Jareds-NTT-iMac kernel[0]: in6_pfx_newpersistaddr: 2601:4:2180:300:426c:8fff:fe33:d4b0 is already configured!
> Dec  3 14:59:43 Jareds-NTT-iMac kernel[0]: in6_pfx_newpersistaddr: 2601:4:2180:300:426c:8fff:fe33:d4b0 is already configured!
>
> I'm trying to diagnose if this is related to a problem I'm seeing as well.
>
> If you have IPv6 at home (either RA or DHCPv6) I'm curious if you see similar messages in /var/log/system.log
>
> Thanks,
>
> - Jared