How to use sed to obfuscate an IPv6 address
I have the following sed command
sed -i 'test.log' -e 's/\([0-9a-fA-F]\{1,4\}\:\)\{7,7\}[0-9a-fA-F]\{1,6\}/\1\w/g'
The goal is to erase the last two blocks of the IPv6 address. However, this sed command doesn't work.
Is there something wrong with the syntax?
how far would
sed -r 's/(([[:xdigit:]]{,4}:)*)[[:xdigit:]]{,4}:[[:xdigit:]]{,4}$/\1:/' file