[j-nsp] Set system no-ping-time-stamp

[Phil Shafer]

"Valentini, Lucio" writes:
>The question 
>is, what do the other commands do ? Juniper does not seem to provide examples. I never
>see the time stamp in the ping response anyway.

These config knobs set sysctl variables in the FreeBSD kernel to
instruct it on how to behave.  The values are then propagated from
the kernel to the PFEs as needed.  You're right, they are woefully
underdocumented.  Here's some info on them:

set system no-multicast-echo
sysctl: net.inet.icmp.bmcastecho
meaning: do not respond to ICMP packets sent to IP broadcast addresses

set system no-redirects
sysctl: net.inet.ip.redirect
meaning: do not send IP redirects

set system no-ping-record-route
sysctl: net.inet.ip.ip_rr (JUNOS specific, I think)
meaning: do not add record route data to ip packets (not ping specific)

set system no-ping-time-stamp
sysctl: net.inet.ip.ip_ts (JUNOS specific, I think)
meaning: do not add timestamps to ip packets (not ping specific)

Despite the names, the last two are _not_ ping/icmp related, but
just turn off ip options processing for these two options.  The
brevity of the names makes me fairly sure they are JUNOS additions.

I'll get these added to the docs.

Thanks,
 Phil