stupid pet tricks (using ifconfig)

[Dennis]

Wierdness in 4.2.

Scenario:

interface fxp0 has address 100.1.1.1. Use it with this address for awhile.

decide to change it to 100.1.1.5. do:

ifconfig fxp0 delete 100.1.1.1
ifconfig fxp0 100.1.1.5 netmask 255.255.255.0

viewing ifconfig shows the new address. HOWEVER, pinging 100.1.1.99, the 
freebsd machine sends out 100.1.1.1, the OLD address.

Is this cached/saved somewhere and not getting cleaned up?

Dennis


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Re: stupid pet tricks (using ifconfig)

[Luigi Rizzo]

 viewing ifconfig shows the new address. HOWEVER, pinging 100.1.1.99, the 
 freebsd machine sends out 100.1.1.1, the OLD address.
 
 Is this cached/saved somewhere and not getting cleaned up?

in the routing table, apparently. If you do a "route -n get"
for the destination address you see the old one.

Manually flushing the relevant entries in the routing table
does the job (yes it is a bug, it should happen automatically,
and it is not 4.2 specific, it has been there forever)

cheers
luigi


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