rsh -n to cisco router: incomplete output

[Dmitry Morozovsky]

Dear colleagues,

some time ago users of our looking glass start to complain about non-working 
ping and traceroute commands; looking at the source, I've found that 

rsh -n router command

partially stops working: it returns some of contents (results up to first ping 
or up to first answer from the first hop in the case of traceroute)

I even looked into tcpdumps and consulted with colleagues, but found only TCP 
RESET semmingly from FreeBSD side which prevents all data to be read.  I also 
tried to look at rsh.c, which was not changed since 2005, just to realize I 
can't find relevant parts.

This is very stable effect, from 4 to 8 branches.  I'm not sure where it starts 
to be broken, alas.  Maybe it's something related to IOS versions; however, I 
doubt it, as all 3 our borders, including rather old one 7206, produce the same 
output.

Any hints?

Thank you in advance; please keep me in CC list as I'm not subscribed to -net.

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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