Question
The following warning is given when docker runs the container ⚠️：
WARNING: IPv4 forwarding is disabled. Networking will not work.
Solution:
# modify configuration
echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
# restart network
systemctl restart network
# Check
sysctl net.ipv4.ip_forward
# net.ipv4.ip_forward = 1
# restart docker
systemctl restart docker
Then restart the container ^_^ …
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