Date: Mon, 01 Nov 2010 17:40:17 +0100 From: "Nikos Vassiliadis" <nvass9573@gmx.com> To: freebsd-net@freebsd.org Subject: strange entry in the routing table Message-ID: <20101101165305.95100@gmx.com>
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Hi, While using proxy arp and the same IP address on multiple interfaces, I noticed a strange entry in the routing table. 192.168.73.60 link#1 UHS 2 0 lo0 => 192.168.73.60/32 link#3 U 0 0 epair0 The 192.168.73.60/24 address is assigned on an ethernet interface. Then I assign 192.168.73.60/32 on some epairs with vnets and use proxyall to proxy arp. I believe what I am doing is supported(?) and everything seems to work as expected. Yet this routing table entry is strange. Thanks for any insights, Nikos lab# ifconfig em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM> ether 08:00:27:17:c3:de inet 192.168.73.60 netmask 0xffffff00 broadcast 192.168.73.255 inet6 fe80::a00:27ff:fe17:c3de%em0 prefixlen 64 scopeid 0x1 nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet autoselect (1000baseT <full-duplex>) status: active lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=3<RXCSUM,TXCSUM> inet 127.0.0.1 netmask 0xff000000 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> lab# netstat -rnfinet Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.73.1 UGS 0 13 em0 127.0.0.1 link#2 UH 0 0 lo0 192.168.73.0/24 link#1 U 1 113 em0 192.168.73.60 link#1 UHS 0 0 lo0 lab# ifconfig epair create epair0a lab# ifconfig epair create epair1a lab# ifconfig epair0a 192.168.73.60/32 lab# ifconfig epair1a 192.168.73.60/32 lab# arp -an ? (192.168.73.60) at 02:c0:44:00:05:0a on epair1a permanent [ethernet] ? (192.168.73.60) at 02:c0:44:00:03:0a on epair0a permanent [ethernet] ? (192.168.73.1) at 00:13:33:07:90:90 on em0 expires in 970 seconds [ethernet] ? (192.168.73.194) at 70:1a:04:f7:4e:3c on em0 expires in 1194 seconds [ethernet] ? (192.168.73.60) at 08:00:27:17:c3:de on em0 permanent [ethernet] lab# netstat -rnfinet Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.73.1 UGS 0 13 em0 127.0.0.1 link#2 UH 0 0 lo0 192.168.73.0/24 link#1 U 1 197 em0 192.168.73.60 link#1 UHS 2 0 lo0 => 192.168.73.60/32 link#3 U 0 0 epair0 lab#
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