I’ve experimenting with IPv6 and I am getting following error with a ping command:
[admin@Ranume] > ping ipv6.google.com
invalid value for argument address
[admin@Ranume] >
What does it mean?
Is the MT (MikroTik RouterOS 5.0beta2) ping command supposed to work with IPv6 or not?
[PPPoE7] > ping ipv7.google.com
invalid value for argument address
Its normal, mikrotik just cant find IP address for DNS name
How to make it find one?
Why it can not find it?
My other Linux systems using same DNS servers find it just fine.
Don’t know if this has anything to do with it, but:
[tim@wifi03 ~]$ nslookup
> ipv6.google.com
Server: 68.1.18.229
Address: 68.1.18.229#53
Non-authoritative answer:
ipv6.google.com canonical name = ipv6.l.google.com.
> ipv6.l.google.com
Server: 68.1.18.229
Address: 68.1.18.229#53
Non-authoritative answer:
*** Can't find ipv6.l.google.com: No answer
This is a Linux box, not MikroTik.
only thing i can think of is check with other DNS server to resolve DNS.
DNS cahcer in RouterOS is capable to resolve IPv6 addresses correctly (AAAA entries)
Are you sure? It should express itself (more) clearly if it does not get a proper IPv6 address and not just talk about “invalid value…”.
For instance on my linux box I get:
[root@haskaa ~]# dig @194.204.0.1 ipv6.google.com AAAA
; <<>> DiG 9.5.2-RedHat-9.5.2-1.fc10 <<>> @194.204.0.1 ipv6.google.com AAAA
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38453
;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;ipv6.google.com. IN AAAA
;; ANSWER SECTION:
ipv6.google.com. 9370 IN CNAME ipv6.l.google.com.
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::67
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::68
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::69
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::63
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::6a
ipv6.l.google.com. 300 IN AAAA 2a00:1450:8007::93
;; AUTHORITY SECTION:
google.com. 332716 IN NS ns4.google.com.
google.com. 332716 IN NS ns1.google.com.
google.com. 332716 IN NS ns2.google.com.
google.com. 332716 IN NS ns3.google.com.
;; ADDITIONAL SECTION:
ns2.google.com. 328879 IN A 216.239.34.10
ns1.google.com. 339651 IN A 216.239.32.10
ns4.google.com. 342174 IN A 216.239.38.10
ns3.google.com. 344571 IN A 216.239.36.10
;; Query time: 46 msec
;; SERVER: 194.204.0.1#53(194.204.0.1)
;; WHEN: Fri Jun 4 19:22:16 2010
;; MSG SIZE rcvd: 358
[root@haskaa ~]# dig @194.204.22.2 ipv6.google.com AAAA
; <<>> DiG 9.5.2-RedHat-9.5.2-1.fc10 <<>> @194.204.22.2 ipv6.google.com AAAA
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10469
;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;ipv6.google.com. IN AAAA
;; ANSWER SECTION:
ipv6.google.com. 9219 IN CNAME ipv6.l.google.com.
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::63
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::67
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::68
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::69
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::6a
ipv6.l.google.com. 264 IN AAAA 2a00:1450:8007::93
;; AUTHORITY SECTION:
google.com. 159690 IN NS ns4.google.com.
google.com. 159690 IN NS ns1.google.com.
google.com. 159690 IN NS ns3.google.com.
google.com. 159690 IN NS ns2.google.com.
;; ADDITIONAL SECTION:
ns1.google.com. 159689 IN A 216.239.32.10
ns2.google.com. 159689 IN A 216.239.34.10
ns3.google.com. 159689 IN A 216.239.36.10
ns4.google.com. 159689 IN A 216.239.38.10
;; Query time: 8 msec
;; SERVER: 194.204.22.2#53(194.204.22.2)
;; WHEN: Fri Jun 4 19:22:23 2010
;; MSG SIZE rcvd: 358
[root@haskaa ~]#
But my MT box (MikroTik RouterOS 5.0beta2) has errors with the same DNS servers:
[admin@Ranume] /ip dns> export
# jun/04/2010 20:44:09 by RouterOS 5.0beta2
# software id = LB5I-W12K
#
/ip dns
set allow-remote-requests=no cache-max-ttl=1w cache-size=2048KiB \
max-udp-packet-size=512 servers=194.204.0.1,194.204.22.2
[admin@Ranume] /ip dns> /ping ipv6.google.com
invalid value for argument address
[admin@Ranume] /ip dns>
What is really wrong with it?
With 5.0beta3 the ping message has changed, but end result is still the same:
[admin@Ranume] > ping ipv6.google.com
while resolving ip-address: could not get answer from dns server
[admin@Ranume] > ping 2a00:1450:8007::68
HOST SIZE TTL TIME STATUS
2a00:1450:8007::68 56 55 43ms echo reply
2a00:1450:8007::68 56 55 47ms echo reply
2a00:1450:8007::68 56 55 42ms echo reply
2a00:1450:8007::68 56 55 44ms echo reply
2a00:1450:8007::68 56 55 50ms echo reply
2a00:1450:8007::68 56 55 49ms echo reply
sent=6 received=6 packet-loss=0% min-rtt=42ms avg-rtt=45ms max-rtt=50ms
[admin@Ranume] >
Only thing to conclude is either RB IPv6 DNS implementation is buggy or PING itself will ignore IPv6 name resolving.
Are there any plans to address that issue?