_ss_tunnel()
{
    local cur prev opts ciphers
    ciphers='rc4-md5 table rc4 aes-128-cfb aes-192-cfb aes-256-cfb aes-128-ctr aes-192-ctr aes-256-ctr bf-cfb camellia-128-cfb camellia-192-cfb camellia-256-cfb cast5-cfb des-cfb idea-cfb rc2-cfb seed-cfb salsa20 chacha20 and chacha20-ietf'
    opts='-s -b -p -k -f -t -m -c -a -n -u -U -v -h -A --mtu --help --mptcp -i -l -L'
    cur=${COMP_WORDS[COMP_CWORD]}
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    compopt +o nospace
    case "$prev" in
        -c|-f)
            _filedir || COMPREPLY=( $(compgen -o plusdirs -f ${cur}) )
            ;;
        -s|-b)
            _known_hosts_real -- "${cur}" || OMPREPLY=( $(compgen -A hostname -- ${cur}) )
            ;;
        -L)
            compopt -o nospace
            _known_hosts_real -c -- "${cur}" || OMPREPLY=( $(compgen -A hostname -S : -- ${cur}) )
            ;;
        -m)
            COMPREPLY=( $(compgen -W "$ciphers" -- ${cur}) )
            ;;
        -a)
            _allowed_users || COMPREPLY=( $(compgen -u -- ${cur}) )
            ;;
        -p|-k|-t|-n|--mtu|-l)
            ;;
        -i)
            _available_interfaces -a || true
            ;;
        *)
            COMPREPLY+=( $(compgen -W "${opts}" -- ${cur}) )
            ;;
    esac
    return 0
}

complete -F _ss_tunnel ss-tunnel