Now I am confused because I have got two sets of contradicting answers.
Some say that anyone can multihome, some say that you need to be of a
certain minimum size to multihome. May I know what is the right answer?
I agree that allowing anyone to multihome would increase the size of the
routing table. So does this mean that someone has to be of a certain size
anyone can multihome, with the cooperation of others.
current practice seems to dictate that the standard
operating procedures to protect the integrity of
the routing system mandate that only prefixes of
certain lengths are allowed at -SOME- isp boundaries.
you seem to have the assumption that there is a single
standard here. There is not.