Move loopback interface settings to 'interfaces vpp loopback'. Create LCP pair kernel interface automatically
set interfaces vpp loopback <loN> description <txt> set interfaces vpp loopback <loN> disable [valueless] set interfaces vpp loopback <loN> address <ipv4net> [multi] set interfaces vpp loopback <loN> mtu <u32:68-16000> set interfaces vpp loopback <loN> vif <u32:0-4094> address <ipv4net> [multi] set interfaces vpp loopback <loN> vif <u32:0-4094> description <txt> set interfaces vpp loopback <loN> vif <u32:0-4094> disable [valueless] set interfaces vpp loopback <loN> vif <u32:0-4094> mtu <u32:68-16000>