Date: Mon, 17 Mar 2025 10:11:38 +0100 From: A FreeBSD User <freebsd@walstatt-de.de> To: freebsd-net@freebsd.org Subject: rtadvd: no temporary address on interface Message-ID: <20250317101205.278275b2@thor.sb211.local>
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[-- Attachment #1 --] Hello, background: running a small router/firewall appliance based upon FBSD 14-STABLE/IPFW. My ISP provides ::/56 prefixes. Setting up tun0 via mpd5 with KAME dhcp6c (net/dhcp6) and a textbook standard setup for prefix delegation seems to work. The router's ISP facing interface is desinated tun0, several (vlan) NICs are facing towards our inner network, each NIC serving a different network and getting its dedicated prefix. On the router's system, the following MIBs are set: net.inet6.ip6.use_tempaddr: 1 net.inet6.ip6.prefer_tempaddr: 1 Although setting such MIBs on any FreeBSD machine we maintain results in setting IPv6 not using the encoded MAC address within the lower 64 bit of the NIC's IPv6 address, I didn't manage to force rtadvd(8) to provide a "temporary" IPv6 address. The NICs obtain delegated prefixes and addresses obviously via SLAAC/EUI64. Is this behaviour a bug? Or do I misunderstand some concepts of FreeBSD and IPv6? Or is it simply a misconfiguration? Thanks in advance, Oliver -- A FreeBSD user [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRQheDybVktG5eW/1Kxzvs8OqokrwUCZ9fnZQAKCRCxzvs8Oqok r3anAQDGVUMywxYkO/0tQRGLX2Z6RZHgPHQxvFu4Waww2wSyuQEAltoQJ30Ay81H q3ekhgfmDosMjqfAzISmfB/tm0+CCAg= =Pg0F -----END PGP SIGNATURE-----
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