IPv6
ifconfig shows that it has an IPv6 address, but it appears that packets are getting lost somewhere as I can't access any ipv6 resources.
e.g. ping6 ipv6.google.com reports 100% packet loss
My other linode in the same data centre works fine.
Any ideas?
8 Replies
ip -6 addr
ip -6 route
ip6tables-save
Those results will likely shed some light on this.
- Les
root@vega:~# ip -6 addr
1: lo:
inet6 2a01:7e00::9503:ca45:d005:d13/64 scope global temporary dynamic
validlft 586473sec preferredlft 67473sec
inet6 2a01:7e00::f03c:91ff:fe89:da45/64 scope global dynamic
validlft 2591992sec preferredlft 604792sec
inet6 fe80::f03c:91ff:fe89:da45/64 scope link
validlft forever preferredlft forever
root@vega:~# ip -6 route
2a01:7e00::/64 dev eth0 proto kernel metric 256 expires 2591991sec
fe80::/64 dev eth0 proto kernel metric 256
default via fe80::1 dev eth0 proto ra metric 1024 expires 81sec
root@vega:~# ip6tables-save
Generated by ip6tables-save v1.4.21 on Thu Dec 4 14:51:31 2014
*filter
:INPUT ACCEPT [1:104]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:ufw6-after-forward - [0:0]
:ufw6-after-input - [0:0]
:ufw6-after-logging-forward - [0:0]
:ufw6-after-logging-input - [0:0]
:ufw6-after-logging-output - [0:0]
:ufw6-after-output - [0:0]
:ufw6-before-forward - [0:0]
:ufw6-before-input - [0:0]
:ufw6-before-logging-forward - [0:0]
:ufw6-before-logging-input - [0:0]
:ufw6-before-logging-output - [0:0]
:ufw6-before-output - [0:0]
:ufw6-reject-forward - [0:0]
:ufw6-reject-input - [0:0]
:ufw6-reject-output - [0:0]
:ufw6-track-forward - [0:0]
:ufw6-track-input - [0:0]
:ufw6-track-output - [0:0]
-A INPUT -j ufw6-before-logging-input
-A INPUT -j ufw6-before-input
-A INPUT -j ufw6-after-input
-A INPUT -j ufw6-after-logging-input
-A INPUT -j ufw6-reject-input
-A INPUT -j ufw6-track-input
-A FORWARD -j ufw6-before-logging-forward
-A FORWARD -j ufw6-before-forward
-A FORWARD -j ufw6-after-forward
-A FORWARD -j ufw6-after-logging-forward
-A FORWARD -j ufw6-reject-forward
-A FORWARD -j ufw6-track-forward
-A OUTPUT -j ufw6-before-logging-output
-A OUTPUT -j ufw6-before-output
-A OUTPUT -j ufw6-after-output
-A OUTPUT -j ufw6-after-logging-output
-A OUTPUT -j ufw6-reject-output
-A OUTPUT -j ufw6-track-output
COMMIT
Completed on Thu Dec 4 14:51:31 2014up>up>
````
inet6 2a01:7e00::9503:ca45:d005:d13/64 scope global temporary dynamic
Looks you have IPv6 Privacy Extentions turned on. You can confirm that with sysctl -a | grep use_tempaddr, which will show something besides 0 if you're using them.
If you have something in /etc/sysctl.d that's setting use_tempaddr to non-zero, remove that. If you don't, you can add a file there and manually set them to 0.
Why would that cause a problem?
- Les