Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Document URL: 
https://access.redhat.com/documentation/ja-jp/red_hat_enterprise_linux/9-beta/html-single/configuring_and_managing_networking/index#getting-started-with-multipath-tcp_configuring-and-managing-networking

Section Number and Name: 
28.2

Describe the issue: 
This says
# echo "net.mptcp.enabled=1" > /etc/sysctl.d/90-enable-MPTCP.conf
# sysctl -p /etc/sysctl.d/90-enable-MPTCP.conf
.. but that is plainly copied from rhel8 should be reworked for rhel9.  On rhel9, that sysctl is activated by default.

I suggest to get engineering review for the whole section.

The updated sections are now available on the customer Portal:

RHEL 9: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/html/configuring_and_managing_networking/getting-started-with-multipath-tcp_configuring-and-managing-networking

RHEL 8: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/getting-started-with-multipath-tcp_configuring-and-managing-networking

The following sections have been updated and have now different content for RHEL 8 and 9:
* Preparing RHEL to enable MPTCP support
* Using iproute2 to configure and enable multiple paths for MPTCP applications