Date: Sat, 2 Oct 1999 20:54:28 -0700 (PDT) From: amorita@meadow.scphys.kyoto-u.ac.jp To: freebsd-gnats-submit@freebsd.org Subject: conf/14098: routing problem on DHCP client with network_interfaces="auto" Message-ID: <19991003035428.0B542150E7@hub.freebsd.org>
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>Number: 14098 >Category: conf >Synopsis: routing problem on DHCP client with network_interfaces="auto" >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Oct 2 21:00:01 PDT 1999 >Closed-Date: >Last-Modified: >Originator: Akio Morita >Release: FreeBSD 3.3-STABLE >Organization: Department of Physics, Kyoto University, Japan >Environment: FreeBSD sasami.jyurai 3.3-STABLE FreeBSD 3.3-STABLE #3: Sat Sep 18 16:17:37 JST 1999 amorita@sasami:/usr/src/sys/compile/SASAMI >Description: Using Ethernet device intialized DHCP and network_interfaces="auto" configuration, ping to IP address of Ethernet device configured by DHCP is faild. In my machine, ifconfig -l gives "fxp0 lp0 tun0 lo0" Configuration Case 1: network_interfaces="lo0 fxp0" # conventional case ifconfig_fxp0="DHCP" Configuration Case 2: network_interfaces="fxp0 lo0" # same as "auto "case ifconfig_fxp0="DHCP" netstat -rn results --- case 1 --- Destination Gateway Flags Refs Use Netif Expire default xxx.y.zz.254 UGSc 2 3 fxp0 127.0.0.1 127.0.0.1 UH 1 5843 lo0 xxx.y.zz/23 link#1 UC 0 0 fxp0 xxx.y.zz.106 127.0.0.1 UGHS 0 0 lo0 xxx.y.zz.254 0:0:4c:a2:15:bc UHLW 3 0 fxp0 566 --- case 1 --- --- case 2 --- Destination Gateway Flags Refs Use Netif Expire default xxx.y.zz.254 UGSc 0 0 fxp0 127.0.0.1 127.0.0.1 UH 0 0 lo0 xxx.y.zz/23 link#1 UC 0 0 fxp0 xxx.y.zz.106 127.0.0.1 UGHS 0 0 fxp0 xxx.y.zz.254 link#1 UHLW 1 0 fxp0 --- case 2 --- , where xxx.y.zz.106 is IP address of fxp0 and xxx.y.zzz.254 is gateway. In the case 2(same as network_interfaces="auto"), ping xxx.y.zz.106 faild because of --- dmesg --- arplookup 127.0.0.1 failed: could not allocate llinfo arpresolve: can't allocate llinfo for 127.0.0.1rt --- dmesg --- >How-To-Repeat: In the case, you have fxp0 and use lo0 for loopback and fxp0 configured by DHCP. set /etc/rc.conf as following network_interfaces="auto" (default value of /etc/defaults/rc.conf) ifconfig_fxp0="DHCP" and reboot in the network with DHCP Server. Then ping to IP address of fxp0 interface. I found this problem in the Note PC installed 3.3-RC by DHCP configuration first. And I tested 3.3-STABLE kernel build Sep 18,1999 with 3.3-RELESE userland. >Fix: Initializing lo0 before other Ethernet device configured by DHCP is essential. I thought two way of fix. one is /etc/rc.network initializing lo0 first. the other is that /sbin/ifconfig -l gives lo0 as the first component of the NIC list. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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