Turning off tx/rx csum offloading for loopback on boot breaks internet

loveydovey

loveydovey

If I turn off tx/rx csum for lo0 in the current session, ifconfig confirms those options are off and internet works.
If I turn it off in /etc/rc.conf by ifconfig_lo0="-txcsum -rxcsum" and reboot, ifconfig confirms those options are off, but there's no internet even though the network interface is active.

Stumped.
 
check the order the interfaces are being initialized and look for errors. My guess is that lo is brought up first, encounters an error, and aborts bringing up the other interfaces. You could also manually bring up the ethernet nic and see if Inet comes back.
 
loveydovey said:
But no, the internet interface is up and status:active! But no internet.
Click to expand...
No internet is quite a generic term...No IP connectivity to LAN peers? No DNS resolution? Internet connectivity is layered. Start peeling back the layers and see at what layer things are broken. Are any packets being transferred or is DNS broken, thus requiring IP numbers to connect...or is the routing table fubared?
 
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