- Plesk Onyx
IPv6 addresses added via Plesk get disabled after Debian server reboot.
The following can be found in
networking: Configuring network interfaces...Missing required variable: address
networking: Missing required configuration variables for interface eth0/inet6.
networking: Failed to bring up eth0.
The following differences can be seen in
/etc/networking/interfaces between the addresses add via OS and via Plesk:
up /sbin/ifconfig eth0 inet6 add 2001:db8:f61:a1ff:0:0:0:80/128 <----- added via Plesk
address 2001:db8:f61:a1ff:0:0:0:81 <------ added manually
netmask 64 <------ added manually
gateway 2001:db8:f61:a1ff:0:0:0:82 <------ added manually
While adding an IPv6 address in
/etc/network/interfaces on Debian, ifmng utility doesn't add necessary address and netmask.
This is Plesk bug with ID #PPPM-6181 which was fixed in Plesk Onyx 17.8.
Upgrade to the latest Plesk version.
If the upgrade is not acceptable, apply a workaround:
Connect to the server using SSH
Enable IPv6 manually via the following commands:
# echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6
# echo 0 > /proc/sys/net/ipv6/conf/default/disable_ipv6
Add the default IPv6 address manually into
# cat /etc/network/interfaces
iface eth1 inet6 static
After that it will be possible to add additional network aliases by means of Plesk.