Getting error when runing perl through ssh

perlknight has asked for the wisdom of the Perl Monks concerning the following question:

all, this ran fined locally:

perl -ibkup -ne '{ s/192.168.10.55/db1.abc.com/g; print "$_\n";}' tnsn
+ames.ora
[download]

But it bails out on ssh, like so:

ssh -lroot somehost "perl -ibkup -ne '{ s/192.168.10.55/db1.abc.com/g;
+ print \"$_\n\";}' tnsnames.ora"
[download]

Any idea why? Thanks.