there is so much more! https://idea.popcount.org/2019-12-06-addressing/ https://idea.popcount.org/2019-12-06-addressing/ (a) trailing whitespace "1.2.3.4\t5"

there is so much more! https://idea.popcount.org/2019-12-06-addressing/ https://idea.popcount.org/2019-12-06-addressing/ (a) trailing whitespace "1.2.3.4\t5" (b) link-local like %1 or %eth0