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Help needed: SERVER_IP: 6: The IPv6 default routers table is empty
Hey all,
VNX7600 -
Anyone remember how to disable IPv6 or get rid of this error message on a data mover:
“The IPv6 default routers table is empty.”
I’ve got a 4 data mover system and it’s spamming the logs (although not causing any issues…).
I’ve already created several routes (and adding default routes) for regular IPv4 addresses but since I'm not using IPv6 I would like to figure out how to get rid of this.
Coming up short on trying to find an answer with searching.
Thanks!
Jyothi_P_Bharat
317 Posts
0
April 24th, 2014 03:00
Hi,
I think you might have deleted the loop back interface for IPv6.
So could you please run these commands an dprovide the output:
server_ifconfig server_x -a
server_route server_x -list
Thanks
Jyothi
boydbria
54 Posts
0
April 24th, 2014 04:00
I have never configured IPv6 nor have a need for it. But here you go:
[nasadmin@CS07600 ~]$ server_ifconfig server_2 -a
server_2 :
el30 protocol=IP device=mge0
inet=128.221.252.2 netmask=255.255.255.0 broadcast=128.221.252.255
UP, Ethernet, mtu=1500, vlan=0, macaddr=0:60:16:52:92:c2 netname=localhost
el31 protocol=IP device=mge1
inet=128.221.253.2 netmask=255.255.255.0 broadcast=128.221.253.255
UP, Ethernet, mtu=1500, vlan=0, macaddr=0:60:16:52:92:c3 netname=localhost
loop6 protocol=IP6 device=loop
inet=::1 prefix=128
UP, Loopback, mtu=32768, vlan=0, macaddr=0:0:0:0:0:0 netname=localhost
loop protocol=IP device=loop
inet=127.0.0.1 netmask=255.0.0.0 broadcast=127.255.255.255
UP, Loopback, mtu=32768, vlan=0, macaddr=0:0:0:0:0:0 netname=localhost
server_2_int protocol=IP device=lacp2-fxg
inet=10.20.133.232 netmask=255.255.255.0 broadcast=10.20.133.255
UP, Ethernet, mtu=1500, vlan=0, macaddr=0:60:16:5c:e0:2
[nasadmin@CS07600 ~]$ server_route server_2 -list
server_2 :
default 10.20.133.1 0.0.0.0 server_2_int
net 128.221.253.0 128.221.253.2 255.255.255.0 el31
net 128.221.252.0 128.221.252.2 255.255.255.0 el30
net 10.20.133.0 10.20.133.232 255.255.255.0 server_2_int
host 127.0.0.1 127.0.0.1 255.255.255.255 loop
boydbria
54 Posts
0
April 24th, 2014 08:00
Here is some more information. DM's are configured just like another VG8 we have and there are no errors showing there. I'm wondering if this is something wierd with file for VNX2.. Again we are NOT using IPv6 so having a log entry every 5 minutes is a bit chatty.
File version is: 8.1.1-33 (which I know there is an upgrade available)
Log errors every 5 minutes on every primary DM:
2014-04-24 10:48:49: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 10:53:51: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 10:58:49: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 11:03:50: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 11:08:49: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 11:13:51: SERVER_IP: 6: The IPv6 default routers table is empty.
2014-04-24 11:18:49: SERVER_IP: 6: The IPv6 default routers table is empty.
Here is the route list for IPv6 stuff which looks correct for loopback.
server_ip server_2 -route -list
server_2 :
Destination Gateway Interface Expires (secs)
::1/128 ::1 loop6 0
boydbria
54 Posts
0
April 25th, 2014 07:00
Still having errors. Anyone see this out in the field? I may just go w/ a code upgrade, although there is nothing specific to IPv6 in the new release notes except for control station stuff.
sundar.rajan
29 Posts
0
November 13th, 2014 16:00
could you please check if there is a file called
/nas/server/slot_x/route6 and .route6.sig
what is the content of it ? compare with the other slots.
also check if there is an entry /nas/server/slot_x/param file with a ipv6 entry ?
checked a lab box and these messages appear to be normal
[nasadmin@vnxnr4-CS0 ~]$ server_log server_2|grep -i server_ip 2014-11-11 21:25:38: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 13:26:27: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 14:30:20: SERVER_IP: 6: The Neighbor Cache is empty. [nasadmin@vnxnr4-CS0 ~]$ server_log server_3|grep -i server_ip 2014-10-28 11:56:08: SERVER_IP: 6: The Neighbor Cache is empty. 2014-10-28 11:56:20: SERVER_IP: 6: The IPv6 default routers table is empty. 2014-10-28 13:06:01: SERVER_IP: 6: The Neighbor Cache is empty. 2014-10-28 13:06:12: SERVER_IP: 6: The IPv6 default routers table is empty. 2014-10-30 17:17:00: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-05 01:42:32: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-11 21:41:27: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 13:42:25: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 14:46:20: SERVER_IP: 6: The Neighbor Cache is empty. [nasadmin@vnxnr4-CS0 ~]$ server_log server_4|grep -i server_ip 2014-11-13 14:58:30: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 14:59:24: SERVER_IP: 6: The IPv6 default routers table is empty. [nasadmin@vnxnr4-CS0 ~]$ server_log server_5|grep -i server_ip 2014-11-05 01:47:11: SERVER_IP: 6: The Neighbor Cache is empty. 2014-11-13 14:51:55: SERVER_IP: 6: The Neighbor Cache is empty.