Archive for 'IPv6' Category
Understanding IPv6 NAT-PT
IPv6 NAT-PT is to be used with IPv4 to IPv6 migration scenarios and it’s purpose is to provide bi-directional connectivity between IPv4 and IPv6 domains. A dual-stack router with interfaces in both IPv4 and IPv6 networks is capable of performin...
ipv6 subnetmask calculation
The relevant prefixes from BB2 are:
2001:205:
2001:200:
2001:222:
The first hexadezimal fields are the same. So you can at least use a mask of /16.
But let’s look for a more specific one and for bits to add.
...
IPv6 generals
A device can have multiple adressess
Unspecified/llpback/compatible-IPv4 address, ::0/96
Mapped IPv4 addresses, ::ffff:0.0.0.0/96
Reserved for NSAP Allocation (RFC 18888), 200::/7
Reserved for IPS Allocation, 400::/7
Lin...
IPv4/IPv6 subnetmask calculation
Well, you all know about calculation network masks and wildcard masks in the IPv4 world. But how to do it in IPv6? IPv6 has a binary numbering system, but IPv6 is hexadecimal based and now we have 340282366920938463463374607431768211456 IP addresses. ...