MLD6QUERY(8)

📦 version 15.1, in freebsd 14.5, freebsd 15.1

💖 NAME 💖

Bestie, welcome to the mld6query(8) page from the System Manager's Manual — it's giving “niche but iconic.” mld6query — send multicast listener query. ✨

🦋 SYNOPSIS 🦋

mld6query [-dgr] intface [maddr]

🌸 DESCRIPTION 🌸

Okay so mld6query sends an IPv6 multicast listener discovery (MLD) query packet toward the specified multicast address, maddr, toward interface intface. If you omit maddr, the linklocal all nodes multicast address (ff02::1) is used. No cap. 💅

After sending a query, mld6query waits for replies for at most 10 seconds. If a reply is returned, mld6query prints it with its type and then waits for another reply. The patience is lowkey unmatched. 🫶

This program is provided only for debugging. It is not necessary for normal use. Fr fr — debugging only. 😭

Flag tea, because we love specifics:

  • -g — with -g, mld6query will transmit a General Query instead of the default Multicast-Address-Specific Query.
  • -d — with -d, mld6query will transmit MLD done packet instead of MLD query packet.
  • -r — with -r, similarly, MLD report packet will be transmitted.
  • -dr — the -dr options are for debugging purposes only.

👑 EXIT STATUS 👑

The program exits with 0 on success, non-zero on failures. Slay when it's 0, 😭 when it's non-zero.

🧚 HISTORY 🧚

The mld6query utility first appeared in WIDE/KAME IPv6 protocol stack kit. Iconic origin story, honestly. 🌈

💀 BUGS 💀

The mld6query utility does not take care of multicast addresses which have non link-local scope. That's the documented bug, bestie — no cap. 🫶

💌 cute sign-off: this page is from Debian and dated May 17, 1998. Bye bestie! 🎀

📦 where this page comes from