Date: Sun, 11 May 2025 01:52:14 +0100 From: Lexi Winter <ivy@FreeBSD.org> To: arch@freebsd.org Subject: setting net.link.bridge.member_ifaddrs=0 by default Message-ID: <aB_0vnXmn_fYnv14@ragweed.eden.le-fay.org>
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[-- Attachment #1 --] hello, since commit 0a1294f6c610948d7447ae276df74a6d5269b62e we have a new sysctl, net.link.bridge.member_ifaddrs. when set to 0, this has the following effects: - an interface with an IP address cannot be added to a bridge - an interface inside a bridge cannot be configured with an IP address - the system will not consider Ethernet frames addressed to link-level addresses of members to be local traffic i would like to propose that we set this to 0 by default in 15.0-RELEASE. my reasoning for this is that having bridge members with an IP address assigned does not work, and has never worked, and it's clear from places where users ask for support (such as IRC) that many people run into this problem and do not understand what they're doing wrong, until someone explains that they should not assign an IP address to bridge members. so, enabling this by default has clear benefits for usability (and also performance) as well as code simplification later when we can remove the relevant code, perhaps in 16.0R. thoughts? [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSyjTg96lp3RifySyn1nT63mIK/YAUCaB/0vQAKCRD1nT63mIK/ YF2hAP9WJeamLWHXf345ot7t3/qIAJIruidMwoQ5LnbfvqPTFgD/ZmNvP+nIi/ph czH1F7qnxXL6IxrTMTrtey8HQcVWVAo= =CvPK -----END PGP SIGNATURE-----help
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