netstat -s displays an error and stops where the TcpExt entries are supposed to be: error parsing /proc/net/snmp: Success
We (Red Hat) should really try to fix this before the next release.
Created attachment 8779 [details] net-tools-1.57-bug25474.patch
2.4 kernels have more to say than 2.2 ones did, so a buffer size needed to be bigger.
patch applied.