Update rn-embedded-cluster.md

Author: ajp-io

docs/release-notes/rn-embedded-cluster.md

@@ -32,11 +32,11 @@ Released on November 14, 2024
 </table>
 
 ### New Features {#new-features-1-19-0}
-* Add preflight checks for the `arp_ignore` and `arp_filter` kernel parameters
+* Adds preflight checks to ensure that the following kernel parameters are set: `net.ipv4.conf.default.arp_filter = 0`, `net.ipv4.conf.default.arp_ignore = 0`, `net.ipv4.conf.all.arp_filter = 0`, and `net.ipv4.conf.all.arp_ignore = 0`.
+* The following kernel parameters will written to `/etc/sysctl.d/99-embedded-cluster.conf` and configured automatically during installation: `net.ipv4.ip_forward = 1`, `net.ipv4.conf.default.arp_filter = 0`, `net.ipv4.conf.default.arp_ignore = 0`, `net.ipv4.conf.all.arp_filter = 0`, and `net.ipv4.conf.all.arp_ignore = 0`. An error will not occur if Embedded Cluster fails to set these kernel parameters at install time. Instead, the aforementioned preflight checks will instruct the user to set these parameters.
 
 ### Improvements {#improvements-1-19-0}
-* Automatically configure system parameters for `ip_forward`, `arp_filter` and `arp_ignore`
-* Warn if an online installation is attempted on air gap
+* If a user downloads an air gap bundle but attempts to install without it, the user will be instructed how to pass the air gap bundle to `install`. They will then be asked if they want to continue with an online installation anyway.
 
 ## 1.18.0