Description of problem:

iproute does not show some geneve protocol's options when they are set. It is a regression against rhel-7.4.


Version-Release number of selected component (if applicable):

iproute-4.11.0-1.el7a
kernel-4.11.0-16.el7a


How reproducible:

100%


Steps to Reproduce:

1. Options udp6zerocsumtx noudp6zerocsumtx udp6zerocsumrx noudp6zerocsumrx are not printed when they are set.

# ip link add TestIface type geneve id 10 remote 192.168.11.1 udp6zerocsumtx; echo "return code: $?"
return code: 0
# ip -d link show TestIface | grep udp6zerocsumtx || echo '<<nothing>>'
<<nothing>>

2. Options udpcsum noudpcsum are printed when they are set, but they are switched. When I set udpcsum, I see noudpcsum and reverse.

# ip link add TestIface type geneve id 10 remote 192.168.11.1 udpcsum; echo "return code: $?"
return code: 0
# ip -d link show TestIface | grep udpcsum || echo '<<nothing>>'
    geneve id 10 remote 192.168.11.1 dstport 6081 noudpcsum addrgenmode eui64

# ip link add TestIface type geneve id 10 remote 192.168.11.1 noudpcsum; echo "return code: $?"
return code: 0
# ip -d link show TestIface | grep udpcsum || echo '<<nothing>>'
    geneve id 10 remote 192.168.11.1 dstport 6081 udpcsum addrgenmode eui64 


Actual results:

Some options are not printed.


Expected results:

All options are printed.