+File: rt_cache_stat.dif
+Apply to: kernel < 2.4.7
+Status: recommended for kernels < 2.4.7.
+ already present in >= 2.4.7
+Description: tracing efficiency of routing cache
+Side effects: none
+
+File: pidentd-3.0.12.dif
+Apply to: pident-3.0.12 tree f.e. from am redhat rpm
+Status: highly recommended
+Description: Patch to pidentd allowing to use tcpdiag facility and fixing
+ some bugs in original pident.
+Side effects: none. Does not break anything not depending on kernel version,
+ even if tcpdiag is absent.
+Advice: not related to this patch but should be said yet.
+ Do NOT configure pidentd to use threads! Use option
+ "--without-threads" when doing "configure".
+ pidentd is typical example of application where
+ threading results in nothing but collapse of performance.
+ Apparently author learned thread programming and decided
+ to apply new knowledge to the first victim.
+
+File: symbol_exports.dif
+Apply to: kernel < 2.4.17
+Status: desired for kernels < 2.4.17
+ not needed for kernels >= 2.4.17
+Description: exports symbols required to load tcpdiag module
+ tcpdiag is builtin since 2.4.17, hence the exports
+ are redundant.
+Side effects: none
+
+File: af_unix.dif
+Apply to: kernel
+Status: recommended
+Desciption: implements fragmented skb for unix sockets reducing
+ vm pressure for datagram sockets and adds to /proc/net/unix
+ columns allowing to monitor recv/send memory and identify
+ peer of connected sockets.
+Side effects: "lsof" blames something about unix sockets.
+ Not a big loss, lsof is not able to tell anything more
+ clever than "can't identify protocol" for sockets anyway.
+Note: the patch affects area where one or two lines changed
+ several times while 2.4. It does not depend on this,
+ but unfortunately may reject. It apply cleanly to
+ 2.4.17.
+