Yes, and in DNS messages as class 3.
Yes, and in Ethernet frames as EtherType 0x0804.
Get your public IP from cloudflare over chaos dns: dig @1.1.1.1 ch txt whoami.cloudflare +short
Yes, and in Ethernet frames as EtherType 0x0804.
Get your public IP from cloudflare over chaos dns: dig @1.1.1.1 ch txt whoami.cloudflare +short