Are DHCP requests sent through the router? Why?

Question

DHCP

Please answer this question

Answer 1

in the general case, they are not transmitted, because they are distributed only within the same broadcast domain by broadcast MAC addresses, packets with which the router does not transmit to other broadcast domains. there are already other broadcast domains behind the router, that's why it is a router.
but if you configure dhcp relay, they will be transmitted through the router.

Answer 2

no
, because the ARP protocol, the
router will replace the address in the packet with its own

Answer 3

In general, no. This is due to the mechanics of the DHCP protocol - the device sends a request "to the void", and such requests are not transmitted to other segments of the local network. But there is a special dhcp relay that forwards such requests to dhcp in another segment

Answer 4

There are 2 mikrotiks, l2tp between them, a bridge is specified on both sides in the profile
Result: very often devices receive an address from the l2tp client from the server Addresses on the
server 172.16.
So it's possible.