Typos in MAC registration process

[barthanssens]

In protocols/ipv6b.rst:

When a company registers for a block of MAC addresses, it receives an identifier. company identifier is then used to populated the c bits of the MAC addresses.

Second sentence should start with "The company identifier..."

The company can allocate all addresses in starting with this prefix and mangages the m bits as it wishes.

Should read: "... can allocate all addresses in this block... " And "manages" instead of "man g ages"