In this video I explain how DHCP work and how it updates DNS entries for new hosts joining the network. I'll also mention Zero Config
0:00 Intro
1:00 the Network configuration
6:00 Showing DHCP in Wireshark
6:30 DHCP Discover
14:40 DHCP Offer
19:00 DHCP Request
21:30 DHCP ACK
22:00 How DHCP Updates DNS
26:15 Zero Configuration (mDNS, Link-local)
Resources
Dhcp https://datatracker.ietf.org/doc/html/rfc1541
Dynamic updates , dhcp RFC2136
https://datatracker.ietf.org/doc/html/rfc2136
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/xe-3se/3850/dhcp-xe-3se-3850-book/dhcp-client-option-12.pdf
RFC 1497
https://www.rfc-editor.org/rfc/rfc1497.html
https://www.rfc-editor.org/rfc/rfc6762#ref-Zeroconf
Link-local
https://www.rfc-editor.org/rfc/rfc3927
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