Date: Wed, 11 Jun 2025 07:28:09 +0200 From: A FreeBSD User <freebsd@walstatt-de.de> To: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: if_bridge(): IPv6 EUI-64 seemingly not working Message-ID: <20250611072836.2a0b026a@thor.sb211.local>
next in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] Hello development folks, after the announcement not supporting set IPs on NICS member of a bridge I tried to switch on all of my administered CURRENT and 14 boxes towards the proposed scheme - with different results. Background: several boxes sit behind dynamically changing uplinks. The boxes are identified via dynamic DNS entries containing the NIC's MAC address at my dyn DNS provider. A prerequisite is to configure the if_bridge() in question to inherit the/a (persistent) MAC of a/the first inherited NIC. In my case, this part works without flaw. net.link.bridge.pfil_bridge When it comes to obtain an IPv6, CURRENT, in contrast to 14-STABLE, fails to set the host part according EUI-64. The resulting 64 host bit, which are considered to contain the 48 bit of the MAC, do contain anything but not anything similar to ANY of the attached NIC/NICs. For the record, here the sysctl settings changing default settings of OIDs involving bridge (according to some docs when jails share epair() devices on that bridge): [...] net.link.bridge.inherit_mac=1 net.link.bridge.pfil_local_phys=0 net.link.bridge.pfil_member=0 net.link.bridge.pfil_bridge=0 net.link.bridge.pfil_onlyip=0 [...] I do not see the described (mutual) misbehaviour on 14-STABLE and or 14.2-RELENG. So the negative effect of this is that the hosts in questions are not accessible/known anymore to the net. A bug or a "feature (due to simple dumb misconfiguration)? Thanks in advance, oh -- A FreeBSD user [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRQheDybVktG5eW/1Kxzvs8OqokrwUCaEkUBAAKCRCxzvs8Oqok r4aoAQCE6LX0jRtSPnsVvQ8j/GJybAoNO/xC7Vg3lGY9gbDrdwEAywmD7EMy2ILf gL+0wleOUIy0VMBsVu256oz/bTmvGgU= =tUX5 -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20250611072836.2a0b026a>