Possible bug in ifconfig regarding ip addresses and fibs

[Steven Crangle]

Hi,


I've been configuring a device with the following rc.conf lines:


ifconfig_le6_name="manee"
ifconfig_manee="fib 5 up"
ifconfig_manee_alias0="inet 185.100.174.221 netmask 255.255.255.0"
ifconfig_manee_alias1="inet 172.31.4.216 netmask 255.255.255.128"
ifconfig_manee_alias2="inet 192.168.124.216 netmask 255.255.255.128"

The result I would have expected is as follows:


manee: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
    options=8<VLAN_MTU>
    ether 08:00:27:d3:83:da
    inet 185.100.174.221 netmask 0xffffff00 broadcast 185.100.174.255
    inet 172.31.4.216 netmask 0xffffffc0 broadcast 172.31.4.255
    inet 192.168.124.216 netmask 0xffffff80 broadcast 192.168.124.255
    nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
    media: Ethernet autoselect
    status: active
    fib: 5


Instead I get the following on boot of the box:


manee: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
    options=8<VLAN_MTU>
    ether 08:00:27:d3:83:da
    inet 185.100.174.221 netmask 0xffffff00 broadcast 185.100.174.255
    inet 172.31.4.216 netmask 0xffffffc0 broadcast 172.31.4.255
    nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
    media: Ethernet autoselect
    status: active
    fib: 5


I then tried to run the following command:

ifconfig manee alias 185.100.174.221 netmask 255.255.255.0
ifconfig manee alias 172.31.4.216 netmask 255.255.255.128
ifconfig manee alias 192.168.124.216 netmask 255.255.255.128

Which resulted in the following output:


ifconfig: ioctl (SIOCAIFADDR): File exists

After this I tried:

ifconfig manee -alias

Which seemed to wipe all addresses fro mthe device as expected.


I then started again using ifconfig lines to assign the aliases to the device, they all succeed apart from when I get to the 192.168.124.216 one. Which again outputs the following:


ifconfig: ioctl (SIOCAIFADDR): File exists

Even though running ifconfig only shows the first two addresses configured.


Note: I also have a mgmt interface on fib 0 configured with the ip : 192.168.124.250

>From investigation it seems to somehow be clashing with this, as I am able to add a 3rd alias with the following line:


ifconfig manee alias 192.168.125.216 netmask 255.255.255.128

Is it not possible to have two IP Addresses on the same range, but different addresses on seperate fibs?

Thanks for any help!

Steven








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Steven Crangle


Systems Developer | Stream Technologies | Glasgow, UK


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+44 (0)844 800 8520


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www.stream-technologies.com<http://www.stream-technologies.com/>














________________________________



[Stream Logo]








Steven Crangle


Systems Developer | Stream Technologies | Glasgow, UK


[http://www.stream-technologies.com/img/phone.png]


+44 (0)844 800 8520


|


[http://www.stream-technologies.com/img/mouse.png]


www.stream-technologies.com<http://www.stream-technologies.com/>