[ewg] rping is not resolving ipv6 addresses

[David J. Wilder]

Hi-

I have been testing rping with ipv6 address on OFED 1.5. I am seeing a
problem with ipv6 address resolution. rping is not always sending
neighbor solicitation out the correct interface. Running tcpdumps I
discovered that the neighbor solicitation is being sent out the first
interface that was configured, in my case eth0 and not the ib0
interface.

This is the test I am running:

Host A:
$ ip address show ib0 | grep inet6
    inet6 fe80::202:c903:1:1925/64 scope link

$ rping -s -v -a ::0

Host B:
$ rping -c -v -a fe80::202:c903:1:1925

cma event RDMA_CM_EVENT_ADDR_ERROR, error -110
waiting for addr/route resolution state 1


Using tcpdump I verified the neighbor solicitation packets went out the
eth0 interface not ib0. If I "ifdown eth0" I see the neighbor
solicitation go out ib0 and the rping works. BTW: Ping6 works ok;
however, it requires that I specify the interface to use on the command
line: $ ping6 fe80::202:c903:1:1925%ib0

I am running with the fixes/workaround for these bugs also.
https://bugs.openfabrics.org/show_bug.cgi?id=1759
https://bugs.openfabrics.org/show_bug.cgi?id=1759

Dave Wilder