Date: Sun, 3 Oct 2010 23:05:59 GMT From: Tobias Herre <tobias.herre@srh-hochschule-berlin.de> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/151186: routed turns RIP off if just one network card is present Message-ID: <201010032305.o93N5xHa054057@www.freebsd.org> Resent-Message-ID: <201010032310.o93NA4Bv083796@freefall.freebsd.org>
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>Number: 151186 >Category: misc >Synopsis: routed turns RIP off if just one network card is present >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Oct 03 23:10:04 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Tobias Herre >Release: FreeBSD 8.1 / 5.5 / 7.x >Organization: SRH Hochschule Berlin >Environment: FreeBSD grusel 8.1-STABLE FreeBSD 8.1-STABLE #1: Thu Sep 16 13:40:46 UTC 2010 root@grusel2.otauni.de:/usr/obj/usr/src/sys/SRHPOWER amd64 >Description: route daemon (routed -q) turns RIP off if just one network adapter exists. >How-To-Repeat: Take two machines connect them via a switch. First machine is called router, has gateway_enable="YES" and shows the following interfaces router# ifconfig bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE> ether 00:50:45:5d:9a:bc inet 192.168.1.158 netmask 0xffffff00 broadcast 192.168.1.255 media: Ethernet autoselect (100baseTX <full-duplex,flag0,flag1>) status: active bge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE> ether 00:50:45:5d:9a:bd inet 192.168.17.17 netmask 0xffffff00 broadcast 192.168.17.255 media: Ethernet autoselect (none) status: no carrier .. and the second machine called client: client# ifconfig bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE> ether 00:50:45:5d:c6:ec inet 192.168.1.157 netmask 0xffffff00 broadcast 192.168.1.255 media: Ethernet autoselect (100baseTX <full-duplex,flag0,flag1>) status: active bge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE> ether 00:50:45:5d:c6:ed media: Ethernet autoselect (none) status: no carrier .. in this case the second machine (client) has two network adapters but bge1 has no ip assigned and is down. Now on the router start the route daemon: router# /sbin/routed -s -d -t -- 10:43:21 -- Tracing actions started Add interface bge0 192.168.1.158 -->192.168.1.0 (mask 0xffffff00) RCVBUF=61440 turn on RIP Add interface bge1 192.168.17.17 -->192.168.17.0 (mask 0xffffff00) Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE> Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF> Add 192.168.17.0 -->192.168.17.17 metric=0 bge1 <IF> Add 192.168.1.0 -->192.168.1.158 metric=0 bge0 <IF> -- 10:43:21 -- ignore RTM_NEWMADDR for AF 173 ignore RTM_NEWMADDR for AF 173 ignore RTM_NEWMADDR without dst ignore RTM_NEWMADDR without dst -- 10:43:26 -- send all routes and inhibit dynamic updates for 4.884 sec and on the client: client# /sbin/routed -d -q -t -- 10:45:36 -- Tracing actions started Add interface bge0 192.168.1.157 -->192.168.1.0 (mask 0xffffff00) RCVBUF=61440 turn on RIP Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE> Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF> Add 192.168.1.0 -->192.168.1.157 metric=0 bge0 <IF> -- 10:45:36 -- ignore RTM_NEWMADDR for AF 172 -- 10:45:36 -- Add #1 192.168.1.0 -->192.168.1.158 metric=1 bge0 10:45:36 Add 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:45:36 -- 10:45:37 -- turn on Router Discovery client using 192.168.1.158 via bge0 Add 0.0.0.0 -->192.168.1.158 metric=15 bge0 <RDISC> turn off RIP Del 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:45:36 As not expected the route to net 192.168.17.0 is deleted immediately and RIP is turned off. Brining up the second interface on the client lets routed work as expected: client# ifconfig bge1 192.168.18.18 client# ifconfig bge1 up client# /sbin/routed -d -q -t -- 10:51:12 -- Tracing actions started Add interface bge0 192.168.1.157 -->192.168.1.0 (mask 0xffffff00) RCVBUF=61440 turn on RIP Add interface bge1 192.168.18.18 -->192.168.18.0 (mask 0xffffff00) Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE> Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF> Add 192.168.18.0 -->192.168.18.18 metric=0 bge1 <IF> Add 192.168.1.0 -->192.168.1.157 metric=0 bge0 <IF> -- 10:51:12 -- ignore RTM_NEWMADDR for AF 172 ignore RTM_NEWMADDR without dst -- 10:51:12 -- Add #1 192.168.1.0 -->192.168.1.158 metric=1 bge0 10:51:12 Add 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:51:12 -- 10:51:13 -- turn on Router Discovery client using 192.168.1.158 via bge0 Add 0.0.0.0 -->192.168.1.158 metric=15 bge0 <RDISC> >Fix: Workaraound: install and configure a second network adapter and bring it up. Or apply the patch. Patch attached with submission follows: --- sbin/routed/rdisc.orig 2010-09-22 11:02:00.040741231 +0000 +++ sbin/routed/rdisc.c 2010-10-03 22:37:08.280021020 +0000 @@ -557,7 +557,7 @@ } /* turn RIP on or off */ - if (!rdisc_ok || rip_interfaces > 1) { + if (!rdisc_ok || rip_interfaces >= 1) { rip_on(0); } else { rip_off(); >Release-Note: >Audit-Trail: >Unformatted:
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