Convert a textual representation of an IP address to a numerical representation. This function takes a textual representation of an IP address in the form a.b.c.d for IPv4 or a:b:c:d:e:f:g:h for IPv6 and converts it into a numeric IP address representation that can be used by other uIP functions.
Step 1: In Icmp6.c file, the node id having the dio packet which is IP address change into the numeric value.
Step 2: for example address conversion.
from address into integer.