Question

what are is the correct compression for these two ipv6 ips.. i keep getting them wrong

9930:cafa:0000:0052:04cc:7b7a:0037:27e6 and

7d2b:00a9:a0c4:0000:a772:00fd:a523:0358

Answer 1

By eliminating all the leading zeros for the first ipv6 address we get compressed ipv6 address which is 9930:cafa:0:52:4cc:7b7a:37:27e6

for the second ipv6 address we did same elimination of all leading zeros and the compressed ipv6 address is 7d2b:a9:a0c4:0:a772:fd:a532:358

We have to remember if any block among the eight block is containing all four zeros then we will keep only one zero for that block and rest of the block will be eliminated.

We can also compress ipv6 address more if there is any series of blocks which is containing all four zeros, means continues block of zeros, then we can simply eliminate that by (::) double colon.