Tomoe Sugihara
bc1b890f74
* Add a note on availability of tcp_syncookies syctl
Sysctl `net.ipv4.tcp_syncookies` is not availalbe on 4.4 kernel
as it's not namespaced yet.
* updating to use {: .note} notation
per https://kubernetes.io/docs/home/contribute/style-guide/#note