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Code Block
languagebash
titleMAC address and product_uuid
# Equivalent commands to get MAC address (type format similar to "fa:16:3d:c9:ac:83")
$ ip link
$ ifconfig -a

# Command to get the product_uuid (type format similar to "92DD146C-F404-4253-J518-49602Z7C1B8F")
$ sudo cat /sys/class/dmi/id/product_uuid

Make sure the br_netfilter module has been loaded. Use the command as verification

Code Block
languagebash
titlebr_netfilter module
# Verify that the br_netfilter module is present
$ lsmod | grep br_netfilter
br_netfilter           22256  0
bridge                151336  1 br_netfilter

# If not present, use
$ sudo modprobe br_netfilter

At this point we add the following lines to our configuration sysctl fileAs a requirement for your Linux node's iptables to correctly see bridged traffic, you should ensure net.bridge.bridge-nf-call-iptables is set to 1 in your sysctl config

Code Block
languagebash
titleSysctl file
$ cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

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The swap values should all be 0 bytes. If not, comment on the swap line of the "/etc/fstab" file and reboot. In this way the swap is permanently deactivated.

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