Unable to ping device on seperate LAN

Yes. The DHCP protocol supports many varied options for requesting and providing numerous pieces of information to clients. The two most common ones you'll likely encounter are Option 3 and Option 6. DHCP Option 3 is the gateway, Option 6 is the DNS server. See https://datatracker.ietf.org/doc/html/rfc2132 for some bedtime reading.

Amusingly, my Kobo e-reader requests Option 42 (NTP) in the D and R part of DORA, but then promptly ignores the Option 42 response in favour of hard-coded NTP servers in the firmware. This is because Kobo's programmers are morons.

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