From nobody Wed Nov 19 23:32:20 2025 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4dBd783TYBz6GTq2 for ; Wed, 19 Nov 2025 23:32:20 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4dBd782tbLz3WGH for ; Wed, 19 Nov 2025 23:32:20 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1763595140; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1j/oVYioOkgdm8mlwqV3MXlczgITbchXwfLgTRiqkuc=; b=PqhmgJmMd1roP/rO6oFZRpNj+VapLtZuYgqBcbX6Txi3DdrX51TW6aoimQYk0M4AFrS1O7 H/wFNz3r9esVruTvJVXRvMEr0dlMSVtKkn1+579U3nSlz26yQGEqzaXsCCxoFhtO4l5EmN 9R6ov8f4BbAqyw4Mu3xbuttG1CsZZyE0rker63wZDDZuNOJixQchGf/H7RlfMNFG20+lky BMfPfitrumsW4CO/h7lRIYRydtOTmUJeSslTWKBik7LjWMLM+8yOuJ/2H/ReYF2USPd2oJ RNrQi1WYMfij8Vik1JpwLdPFB1hRdDe2r0/ZDOE2lAHgTU2REs92fRGzE28Dlg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1763595140; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1j/oVYioOkgdm8mlwqV3MXlczgITbchXwfLgTRiqkuc=; b=YJj73OW4AkR9jD5Zwe1gvTLOiGN/yhxGZobyQcXsj23fMxHlKoYM8nFjvhVPTXtyuLXV6L vvvpQ0lbrEOx9PkUC7t3G6WxANDmW9giENTnyj9pszkzifAbkqzQvhAc7JK67oGAhD1B6a VAEZlFwi5T2ELa/IXni2kJWe+8GL7DNiFqrTGjcgiJ0R5z2Q6t3GOKc0BM7wb22xGoP2jv pWqtVWmUMk4UP/b0Uu/Wy070DaDKkH21I5lRfgF936q+J74w/JuoOO8jcFEYmIMFjK6lFF 5TE2wwK4Yf0UJQEDtTv6DAiJ1YwP8A3GnWunXtTjp+5kR0ygo7vhCqCJBNdIPA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1763595140; a=rsa-sha256; cv=none; b=IsxWdNn5DF8/Zs5dxnYDd67tHl7W+faTBC0prs7ZXX9nG4nZEmSr4SyDtv7CYGDH/aVW/U g32oqGCbJSO6gkih85hJaTinK+ljQcMQVudfsybfb745agAC1aMaojcecEFcUr+i3WgSna EJca76jgMfgJbP6iXLnrDcPr4dBo4jJ9e7QB2ujiMNgw1mV2XbhjDCG/RtG1tOq2qvTkmx Cr79A6BkjAtEvPLB6j6oqtUR97iZKyIQ1SUawM0eHiLpsGfG+lJwtKp1+9IJ90v+yYXtNw kXzsg/yW25Enzxf6bd8gDkxvuSpfID5nK6axG+FDmIRVqEBeQrgPPVDjguV1EA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4dBd782SYrz11c1 for ; Wed, 19 Nov 2025 23:32:20 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 5AJNWKmS046653 for ; Wed, 19 Nov 2025 23:32:20 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 5AJNWKKq046652 for net@FreeBSD.org; Wed, 19 Nov 2025 23:32:20 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 291100] Reduce ARP cache time from 20 minutes to 60 seconds Date: Wed, 19 Nov 2025 23:32:20 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 16.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: achillesgaikwad@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291100 --- Comment #2 from Achilles Gaikwad --- (In reply to Marek Zarychta from comment #1) Thank you for the feedback Marek, >Perhaps this can be dynamic in dynamic a environment? I don't know if it w= ill be accepted or not, but could you please rework your patch to make this= value runtime tunable ? Yes, as of today, we can change this value using a `sysctl`.=20 I also agree, users can configure this themselves in a dynamic environment where IP addresses can be recycled. With this change I am hoping that we can provide a better user experience by defaulting to 60s instead of 20m as this would not affect systems negatively. ``` $ sysctl net.link.ether.inet.max_age net.link.ether.inet.max_age: 1200 ``` --=20 You are receiving this mail because: You are the assignee for the bug.=