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two ssh command result no effect when ssh logon in ?

February 17, 2015 845 views

I can connect google with firefox autoproxy plugin inside via ssh tunnel (google is block here) which build by the command :
ssh -D root@myvpsip

It is strange for me to understand :
If the following two ssh command execute one by one ,i can't connect google with firefox any more .
ssh root@myvpsip
ssh -D root@myvpsip

Why ?

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