Thanks Mark , upgrade of libssl1.0.0 fixed the issue of ntp.
dpkg -l | grep libssl1 ii libssl1.0.0 1.0.1-4ubuntu5.38 SSL shared libraries
dpkg -l | grep openssl ii openssl 1.0.1-4ubuntu5.38 Secure Socket Layer (SSL) binary and related cryptographic tools
dpkg -l | grep ntp ii ntp 1:4.2.6.p3+dfsg-1ubuntu3.11 Network Time Protocol daemon and utility programs
Thanks Mark , upgrade of libssl1.0.0 fixed the issue of ntp.
dpkg -l | grep libssl1
ii libssl1.0.0 1.0.1-4ubuntu5.38 SSL shared libraries
dpkg -l | grep openssl
ii openssl 1.0.1-4ubuntu5.38 Secure Socket Layer (SSL) binary and related cryptographic tools
dpkg -l | grep ntp p3+dfsg- 1ubuntu3. 11 Network Time Protocol daemon and utility programs
ii ntp 1:4.2.6.