1 # See https://tools.ietf.org/html/rfc5952, https://tools.ietf.org/html/rfc4007. 2 3 # internet address and host name 4 ::1 localhost # inline comment separated by tab 5 fe80:0000:0000:0000:0000:0000:0000:0001 localhost # inline comment separated by space 6 7 # internet address with zone identifier and host name 8 fe80:0000:0000:0000:0000:0000:0000:0002%lo0 localhost 9 10 # internet address, host name and aliases 11 fe80::3%lo0 localhost localhost.localdomain 12