#ipv4=$(for i in $(echo $seq8 | sed 's/\(..\)/0x\1 /g'); do printf "%d." $i; done | sed 's/\.$/\n/')
# Numbers beginning with "0" are treated as octal (i.e. base-8): we would have 'invalid octal number with 08 and 09'
# Solution: convert to base-10 in this way: $((10#$i))
ipv4=$(for i in $(echo $seq8 | sed 's/\(..\)/ \1 /g'); do printf "%d." $((10#$i)); done | sed 's/\.$/\n/')
#ipv4=$(for i in $(echo $seq8 | sed 's/\(..\)/0x\1 /g'); do printf "%d." $i; done | sed 's/\.$/\n/')
# Numbers beginning with "0" are treated as octal (i.e. base-8): we would have 'invalid octal number with 08 and 09'
# Solution: convert to base-10 in this way: $((10#$i))
ipv4=$(for i in $(echo $seq8 | sed 's/\(..\)/ \1 /g'); do printf "%d." $((10#$i)); done | sed 's/\.$/\n/')