On Fedora 20 x86_64.
According to "man ping", ping should work from a subinterface specifying
either the interface name or its address:
> -I interface
> interface is either an address, or an interface name. If inter‐
> face is an address, it sets source address to specified inter‐
> face address. If interface in an interface name, it sets source
> interface to specified interface.
I've got a subinterface and I'm trying to ping from it.
> # ifconfig eth3:sub1
> eth3:sub1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 172.17.30.143 netmask 255.255.254.0 broadcast 172.17.31.255
> ether 90:e2:ba:34:46:41 txqueuelen 1000 (Ethernet)
> device memory 0xdc7e0000-dc800000
If I ping from the address, it works as specified. If I specify the
interface name instead, I see:
> # ping -I eth3:sub1 172.17.30.1
> ping: SO_BINDTODEVICE: Invalid argument
Investigating a little deeper:
> # strace ping -I eth3:sub1 172.17.30.1
> execve("/usr/bin/ping", ["ping", "-I", "eth3:sub1", "172.17.30.1"], [/* 38 vars */]) = 0
> ...
> setsockopt(4, SOL_SOCKET, SO_BINDTODEVICE, "eth3:sub1\0", 13) = -1 ENODEV (No such device)
> ...
> +++ exited with 2 +++
Any thoughts?
--
Dave Close
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