IPv6 woes - RFC

Sun Sep 26 00:44:00 UTC 2021

On Sat, 25 Sep 2021 23:20:26 +0200, Baldur Norddahl said:

> We should remember there are also multiple ways to print IPv4 addresses.
> You can zero extend the addresses and on some ancient systems you could
> also use the integer value.

19:17:38 0 [~] ping 2130706433
PING 2130706433 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.126 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.075 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.063 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.082 ms
^C
--- 2130706433 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 84ms
rtt min/avg/max/mdev = 0.063/0.086/0.126/0.025 ms

Works on Fedora Rawhide based on RedHat, Debian 10, and Android 9.

That's a bit more than just 'some ancient systems' - depending whether
it works on other Android releases, and what IoT systems do, we may have
more systems today that support it than don't support it.