What is the most efficient subnet mask for a point to point ipv6 connection?
A. /127
B. /128
C. /64
D. /48
E. /32
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What is the most efficient subnet mask for a point to point ipv6 connection?
rfc6164
says: Using 127-Bit IPv6 Prefixes on Inter-Router Links
Abstract
On inter-router point-to-point links, it is useful, for security and
other reasons, to use —->>>127-bit IPv6 prefixes. Such a practice
parallels the use of —–>31-bit prefixes in IPv4. (meaning /32 for IPv4)
This document
specifies the motivation for, and usages of, 127-bit IPv6 prefix
lengths on inter-router point-to-point links.
Thanks. Link – https://tools.ietf.org/html/rfc6164