things deleted from the stored Cisco config

[Ed Ravin]

In the "rancid" script, we have:

 /^ip prefix-list\s+(\S+)\s+seq\s+(\d+)\s+(permit|deny)\s+(\d\S+)(\/.*)$/ &&
       ProcessHistory("PACL $1 $3","ipsort","$4","ip prefix-list $1 $3 $4$5\n")

Which deletes the "seq NN" portion of an ip prefix list.  So a prefix
list that looks like this:

  ip prefix-list my-nets seq 20 permit blah

is changed to:

  ip prefix-list my-nets permit blah

What's the reasoning behind this?


Also, at the top of the "show running-config" output from most of my
Ciscos, are these two handy lines:

! Last configuration change at 14:33:32 edt Wed Jun 1 2005 by eravin
! NVRAM config last updated at 14:35:18 edt Wed Jun 1 2005 by eravin

Why does rancid also delete these?  We depend on those lines to tell
who last modified the config and when they did it.