From: Mark Johnston <markj@freebsd.org> To: Marco Moock <mm@dorfdsl.de> Cc: freebsd-net@freebsd.org Subject: Re: QEMU netstat -ian is missing multicast addresses for ethernet devices Message-ID: <aYEHyZ3ZYAfJivGE@nuc> In-Reply-To: <20260202200851.65da6b9d@ryz.dorfdsl.de>
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On Mon, Feb 02, 2026 at 08:08:51PM +0100, Marco Moock wrote: > Hello! > > I noticed a strange situation on 2 different FreeBSD machines, both are > on qemu (one on a hoster, the other on my own Linux system). > > For vtnet, em and le, I noticed that when an IPv6 address is assigned, > netstat -ain does not display the related multicast addresses (e.g. the > mandatory all-nodes or solicited node addresses). Although it displays > the multicast addresses for lo0. > > On a virtualbox machine, those multicast addresses are displayed properly. > > Can anyone confirm this and let me know where the issue is? This might be fixed by the following commit: https://cgit.freebsd.org/src/commit/?id=0952943a680dca12fe8f65f8813a9dca0783ce88 That patch will be in 14.4 and 15.1. > I assume it is listening on those addresses, as NDP is working. > > [m@host ~]$ netstat -ain > Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll > vtnet0 1500 <Link#1> 52:xyz 2117994619 0 0 1488531816 0 0 > vtnet0 - 7xyz/24 7xyz 1457062414 - - 1748874037 - - > vtnet0 - fe80::%vtnet0/64 fe80::xyz%vtnet0 28527 - - 77718 - - > vtnet0 - 2xyz::/64 2xyz9 619818192 - - 387236589 - - > lo0 16384 <Link#2> lo0 2544743 0 0 2544743 0 0 > lo0 - ::1/128 ::1 1154156 - - 1310680 - - > ff01::1%lo0 > ff02::2:xyz > ff02::2:xyz > ff02::1%lo0 > ff02::1:ff00:1%lo > lo0 - fe80::%lo0/64 fe80::1%lo0 0 - - 0 - - > ff01::1%lo0 > ff02::2:xyz > ff02::2:xyz > ff02::1%lo0 > ff02::1:ff00:1%lo > lo0 - 127.0.0.0/8 127.0.0.1 8 - - 1390587 - - > 224.0.0.1 > [m@host ~]$ > > -- > kind regards > Marco > > Send unsolicited bulk mail to 1770058571muell@stinkedores.dorfdsl.dehome | help
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