I found an issue for a long time.
For test requirement without any switch/hub:
One host has two NICs and with the same subnet setting.
(direct connect peer) 10.0.0.10/8
(direct connect peer) 10.0.0.20/8
ping command: #ping 10.0.0.10 -c 5 -S 10.0.0.1
In Linux, while I assign source interface and IP address,
ex. ping 10.0.0.10 -I eth0 ......packet will be sent by NIC1
ping 10.0.0.20 -I eth1 ......packet will be sent by NIC2
In BSD, while I assign source interface/IP address, packet always
be sent by NIC1. The NIC2 looks like dead. Until I set
"#ifconfig eth0 down" and NIC2 would be got up.
So the ping command parameter "-S" would be broke down in this case.
The packets format maybe is correct but NIC2 couldn't work.
If this is NOT a BUG, please tell me BSD is followed which standard?
Or what the purpose of BSD to define this behavior?
Thanks & Regards
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