Yes, the fact that MikroTik RouterOS is based on Linux is one of the reasons why MikroTik devices automatically generate link-local IPv6 addresses. Linux, like many other modern operating systems, supports IPv6 natively, including automatic generation of IPv6 link-local addresses.

Link-local addresses are a type of IPv6 address used for communication within a local network segment or subnet and are not routable beyond that scope.

These addresses are automatically generated by each network interface that has IPv6 enabled, using the prefix FE80::/10 followed by the 54 bits set to zero and the last 64 bits generally formed from the MAC address of the interface in a process known as EUI-64, although they can also be generated by other methods.

This behavior is part of the IPv6 standard defined in RFC 4291 and is implemented by default in operating systems that support IPv6, including MikroTik's RouterOS, to ensure basic network functionality, such as automatic address configuration and router discovery without need for manual configuration.

This makes network management easier and ensures that devices can communicate on the local network from the moment they connect.