[#D35545109E67507FBD4352117BEAFBA6A1BA398F]
Return an address object that represents the loopback address
static ipv6_address loopback() noexcept;
The unicast address 0:0:0:0:0:0:0:1 is called the loopback address. It may be used by a node to send an IPv6 packet to itself.