IPv6 Forwarding Not Enabled

[soriaj]

Description

Install of a kURL cluster does not set IPv6 forwarding.

Reproduction Steps

On an IPv6 node run curl https://kurl.sh/f7deea4 | sudo bash

Expected Behavior

IPv6 forwarding on IPv6 node(s) should be set to 1 during install.

Additional Information

Setting can be set in the kubernetes_sysctl_config function inside kURL script

if ! cat /etc/sysctl.conf | grep "^net.ipv6.conf.all.forwarding" | tail -n1 | grep -Eq "^net.ipv6.conf.all.forwarding\s*=\s*1"; then
    echo "net.ipv6.conf.all.forwarding = 1" >> /etc/sysctl.conf
fi

[marccampbell]

@areed do you want to take a look at this?