Symptoms
The server is unable to communicate using the IPv6 interface. This may interrupt common services such as AutoSSL or other network communications.
Cause
cPanel does not strictly require a working IPv6 connection, though some features will default to IPv6 if it is available. If the IPv6 interface is partially enabled, it may be used when making network connections but be unable to resolve, causing some requests to fail. The instructions below can help confirm if your IPv6 interface is functioning correctly.
Resolution
- Access your server using SSH as the
rootuser. -
Validate the contents of the IPv6 network configuration file:
# cat /proc/net/if_inet6
00000000000000000000000000000001 01 80 10 80 lo
2620000028a4a05cf8163efffe02812f 02 40 00 00 eth0
fe80000000000000f8163efffe02812f 02 40 20 80 eth0
CPANEL_ERROR: If this file is missing, then your server's IPv6 configuration will not function properly.
- If the file exists, then we can perform a network connection to see if the interface can reach out:
# ping6 google.com -c 5
CPANEL_ERROR: A result of "Network is unreachable" indicates the interface is not working.
If your IPv6 interface is enabled but not working, we recommend working with the hosting provider to either disable the interface or repair it to allow network connections, depending on your needs for IPv6 networking.
Comments
0 comments
Article is closed for comments.