Auto start and stop ssh tunnel, for super fast remote editing with Vim

.vimrc

"{{{ Start and stop ssh tunnel, Fast remote editing idea via http://www.erikzaadi.com/2013/03/07/fast-remote-editing-with-vim/

function! StartSshTunnel(machine)
    let shellcmd = "ssh ".a:machine." -f -N -o ControlMaster=auto -o ControlPath=/tmp/%r@%h:%p"
    let tunnel=system(shellcmd)
endfunction

function! StopSshTunnel()
   let kill = system("lsof -i -n | grep ssh | awk '{print $2}' | xargs kill -9")
endfunction

au FileType netrw au VimEnter * call StartSshTunnel(g:netrw_machine)
au FileType netrw au VimLeave * call StopSshTunnel()

"}}}

" More vim Hacks in my .vimrc https://github.com/motyar/dotfiles/blob/master/.vimrc