public Builder setAddress(@NonNull IpAddress address) {
            mConfig.address = address;
            return this;
        }
Convenience method to add a network address to the VPN interface using a numeric address
string. See {@link InetAddress} for the definitions of numeric address formats.

Adding an address implicitly allows traffic from that address family (i.e., IPv4 or IPv6)
to be routed over the VPN.

@param address IPv4 or IPv6 address.
@return this {@link Builder} object to facilitate chaining method calls.
netbare-core/src/main/java/com/github/megatronking/netbare/NetBareConfig.java