DHCP_RELEASE(1)

📦 version 2.93, in alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, centos-stream 10, centos-stream 9, debian bookworm, debian trixie, fedora 43, fedora 44, opensuse-leap 16.0, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

✨ NAME ✨

okay so this is dhcp_release6, living inside the DHCP_RELEASE(1) manual page — it releases a DHCPv6 lease on the local dnsmasq DHCP server 💅

🌸 SYNOPSIS 🌸

dhcp_release6 --iface <interface> --client-id <client-id> --server-id
server-id --iaid <iaid>  --ip <IP>  [--dry-run] [--help]

💖 DESCRIPTION 💖

bestie. this is the little utility that forces the DHCP server running on this machine to release a DHCPv6 lease. that's it, that's the whole job. it's giving "i said what i said, give the address back" energy 👑

🎀 OPTIONS 🎀

  • -a, --ip — the IPv6 address you wanna release. that's the one, periodt.
  • -c, --client-id — a colon-separated hex string that represents the DHCPv6 client id. normally you can find it in the leases file, both on the client and on the server. iykyk 🔍
  • -d, --dry-run — prints a hexadecimal representation of the generated DHCPv6 release packet to standard output and then dips. no packet actually goes anywhere, it's just vibes and hex ✨
  • -h, --help — prints usage info to standard output and exits. classic, iconic, we love her 🫶
  • -i, --iaid — decimal representation of the DHCPv6 IAID. again, normally found in the leases file both on client and server. the receipts are all in that file, ngl 💀
  • -n, --iface — the network interface to send the DHCPv6 release packet from. pick your lane 🦋
  • -s, --server-id — a colon-separated hex string representing the DHCPv6 server id. yes, also normally in the leases file, on client and server. do you see the pattern here bestie 🍓

🔥 NOTES 🔥

MUST be run as root — it will fail otherwise. no root, no release, no exceptions. that's the rule and we respect it 💜

😭 LIMITATIONS 😭

only usable on IPv6 DHCP leases. if you came here for IPv4, this is not the page for you, babe 🙈

🌈 SEE ALSO 🌈

dnsmasq(8)

👑 AUTHOR 👑

this manual page was written by Simon Kelley <simon@thekelleys.org.uk> 💖

and that's a wrap on DHCP_RELEASE(1) from the General Commands Manual section, fr fr — go release those leases responsibly, bestie, and remember: root or it's a no 🎀✨💅

📦 where this page comes from