Date: Thu, 1 Feb 2007 05:59:59 GMT From: Vladimir Korkodinov<newbieman@perm.raid.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/108645: [gre] bogus route after ifconfig tunnel Message-ID: <200702010559.l115xxml052120@www.freebsd.org> Resent-Message-ID: <200702010600.l1160aBt057416@freefall.freebsd.org>
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>Number: 108645
>Category: misc
>Synopsis: [gre] bogus route after ifconfig tunnel
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Feb 01 06:00:35 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator: Vladimir Korkodinov
>Release: 6.2-STABLE
>Organization:
ER-telecom
>Environment:
uname -a
FreeBSD test 6.2-STABLE FreeBSD 6.2-STABLE #0: Wed Jan 31 19:11:02 YEKT 2007 viper@test:/usr/src/sys/i386/compile/viper i386
>Description:
After the creation of tunnel bogus route appears.
The tunnel does not work because of it. Temporarily it helps arp -ad.
however this route may appears again after the certain time.
I saw the similar symptoms on 6.1R and 6.2R.
>How-To-Repeat:
#ifconfig
vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.100.201.100 netmask 0xffff0000 broadcast 10.100.255.255
ether 00:05:5d:75:fd:73
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.0.1 netmask 0xff000000
#arp -an
? (10.100.10.235) at 00:15:f2:5b:37:29 on vr0 [ethernet]
#ifconfig gre1 create
#arp -an
? (10.100.10.235) at 00:15:f2:5b:37:29 on vr0 [ethernet]
#ifconfig gre1 tunnel 10.100.201.100 10.100.200.120
#arp -an
? (10.100.10.235) at 00:15:f2:5b:37:29 on vr0 [ethernet]
? (10.100.200.121) at (incomplete) on vr0 [ethernet]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
#netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
10.1.12.38 127.0.0.1 UGHS 0 2 lo0
10.100/16 link#1 UC 0 0 vr0
10.100.10.235 00:15:f2:5b:37:29 UHLW 1 110 vr0 1128
10.100.200.120 00:0c:29:0e:1d:b2 UHLW 2 42 vr0 1130
10.100.200.121 link#1 UHLW 2 0 vr0
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
127.0.0.1 127.0.0.1 UH 1 10 lo0
# ifconfig gre1 inet 10.1.12.38 10.1.12.37 netmask 255.255.255.252
# ifconfig gre1 mtu 1450
# ifconfig gre1 up
# route add -host 10.1.12.38 127.0.0.1
# ping 10.1.12.37
PING 10.1.12.37 (10.1.12.37): 56 data bytes
^C
--- 10.1.12.37 ping statistics ---
3 packets transmitted, 0 packets received, 100% packet loss
#arp -ad
10.100.10.235 (10.100.10.235) deleted
10.100.200.120 (10.100.200.120) deleted
10.100.200.121 (10.100.200.121) deleted
#ping 10.1.12.37
PING 10.1.12.37 (10.1.12.37): 56 data bytes
64 bytes from 10.1.12.37: icmp_seq=0 ttl=254 time=1.030 ms
64 bytes from 10.1.12.37: icmp_seq=1 ttl=254 time=0.605 ms
^C
--- 10.1.12.37 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.605/0.818/1.030/0.213 ms
>Fix:
Unknown
>Release-Note:
>Audit-Trail:
>Unformatted:
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