Date: Thu, 24 Jul 2025 14:08:18 +0100 From: Lexi Winter <ivy@freebsd.org> To: freebsd-current@freebsd.org, freebsd-net@freebsd.org Subject: Re: ifconfig_bxe0_ipv6="inet6 accept_rtadv" seems to break bridging Message-ID: <aIIwQq2GQyiAoaTp@freefall.freebsd.org> In-Reply-To: <aIIuGOc9-hdvUyFU@int21h> References: <aIIuGOc9-hdvUyFU@int21h>
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[-- Attachment #1 --]
void:
> I've found ifconfig_bxe0_ipv6="inet6 accept_rtadv" breaks bridging
> on a dual stack interface in unless some manual hoops are jumped through.
>
> net.link.bridge.member_ifaddrs is the default ("0") here.
>[...]
> Adding ifconfig_bxe0_ipv6="inet6 accept_rtadv" and then rebooting causes the
> following:
you should set accept_rtadvd on the bridge interface, not the member
interface. setting it on the member interface will try to assign the
SLAAC address to the member, which is not allowed.
you may also need to set some other inet6 flags, since for historical
reasons these are disabled on bridges by default:
ifconfig_bridge0_ipv6="inet6 -ifdisabled auto_linklocal accept_rtadv"
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