From owner-freebsd-bugs Wed Jan 29 11:40: 7 2003 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E69E137B405 for ; Wed, 29 Jan 2003 11:40:04 -0800 (PST) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id E808043FAF for ; Wed, 29 Jan 2003 11:40:03 -0800 (PST) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.6/8.12.6) with ESMTP id h0TJe3NS025570 for ; Wed, 29 Jan 2003 11:40:03 -0800 (PST) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.6/8.12.6/Submit) id h0TJe3JP025568; Wed, 29 Jan 2003 11:40:03 -0800 (PST) Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AB06C37B401 for ; Wed, 29 Jan 2003 11:31:22 -0800 (PST) Received: from v20.valuehost.ru (v20.valuehost.ru [62.118.251.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id AEA0F43FB9 for ; Wed, 29 Jan 2003 11:31:21 -0800 (PST) (envelope-from anton@v20.valuehost.ru) Received: from v20.valuehost.ru (localhost [127.0.0.1]) by v20.valuehost.ru (8.12.6/8.12.6) with ESMTP id h0TJZIAu001776; Wed, 29 Jan 2003 22:35:18 +0300 (MSK) (envelope-from anton@v20.valuehost.ru) Received: (from root@localhost) by v20.valuehost.ru (8.12.6/8.12.6/Submit) id h0TJZIsp001775; Wed, 29 Jan 2003 22:35:18 +0300 (MSK) Message-Id: <200301291935.h0TJZIsp001775@v20.valuehost.ru> Date: Wed, 29 Jan 2003 22:35:18 +0300 (MSK) From: "Anton Kornev" Reply-To: "Anton Kornev" To: FreeBSD-gnats-submit@FreeBSD.org Cc: kant@valuehost.ru X-Send-Pr-Version: 3.113 Subject: kern/47648: creating alias on ethernet interface cause network to hang for 33 seconds Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >Number: 47648 >Category: kern >Synopsis: creating alias on ethernet interface cause network to hang for 33 seconds >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jan 29 11:40:03 PST 2003 >Closed-Date: >Last-Modified: >Originator: Anton Kornev >Release: FreeBSD 4.7-STABLE i386 >Organization: ValueHost >Environment: System: FreeBSD v20.valuehost.ru 4.7-STABLE FreeBSD 4.7-STABLE #0: Tue Jan 28 19:24:52 MSK 2003 root@v20.valuehost.ru:/usr/src/sys/compile/V20 i386 Different i386 hosts. Sample configuration: SMP kernel, 2 * P-IV, 1GB mem, SCSI disks, 2 em0 interfaces. Latest cvsupped stable. >Description: /sbin/ifconfig em0 alias [ip] netmask 255.255.255.255 hangs network for 30-35 seconds. For example su-2.05b# /sbin/ifconfig -a em0: flags=8843 mtu 1500 options=3 inet 62.118.251.68 netmask 0xffffff00 broadcast 62.118.251.255 ether 00:07:e9:04:b0:08 media: Ethernet autoselect (100baseTX ) status: active em1: flags=8802 mtu 1500 options=3 ether 00:07:e9:04:b0:09 media: Ethernet autoselect status: no carrier sl0: flags=c010 mtu 552 faith0: flags=8002 mtu 1500 lo0: flags=8049 mtu 16384 inet 127.0.0.1 netmask 0xff000000 ppp0: flags=8010 mtu 1500 Now launch ping from any host and type /sbin/ifconfig em0 alias 62.118.251.84 netmask 255.255.255.255 and host stopped to answer icmp echo-requests kant@ahost:/usr/home/kant#ping 62.118.251.68 PING 62.118.251.68 (62.118.251.68): 56 data bytes 64 bytes from 62.118.251.68: icmp_seq=0 ttl=54 time=94.275 ms 64 bytes from 62.118.251.68: icmp_seq=1 ttl=54 time=80.934 ms 64 bytes from 62.118.251.68: icmp_seq=2 ttl=54 time=86.783 ms 64 bytes from 62.118.251.68: icmp_seq=3 ttl=54 time=88.531 ms 64 bytes from 62.118.251.68: icmp_seq=36 ttl=54 time=91.248 ms 64 bytes from 62.118.251.68: icmp_seq=37 ttl=54 time=111.068 ms 64 bytes from 62.118.251.68: icmp_seq=38 ttl=54 time=101.596 ms 64 bytes from 62.118.251.68: icmp_seq=39 ttl=54 time=80.684 ms 64 bytes from 62.118.251.68: icmp_seq=41 ttl=54 time=119.698 ms tcpdump sessions saved on the target host (62.118.251.68) also doesn't see any network activity this time. >How-To-Repeat: Obvious - see above. >Fix: unknown >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message