- is_*() returns True if the interface name is of a certain type
is_bondethernet() is_loopback() is_bvi() is_bridgedomain()
is_vxlan_tunnel() is_phy()
- get_phys() by process of elimination, returns all interface names
that are supposed to be physical network interfaces.
Add unit tests for validator/vxlan_tunnel.py
=> Notable: while here, fix a bug in get_by_name()
Add unit tests for all the is_*() and get_phys() functions.
This is more strict than VPP itself, which does allow a destination to
be L3 while the source is L2:
DBGvpp# show mode
l3 local0
l3 GigabitEthernet3/0/0
l3 GigabitEthernet3/0/1
l3 HundredGigabitEthernet12/0/0
l3 HundredGigabitEthernet12/0/1
DBGvpp# set interface l2 xconnect GigabitEthernet3/0/0 GigabitEthernet3/0/1
DBGvpp# show mode
l3 local0
l2 xconnect GigabitEthernet3/0/0 GigabitEthernet3/0/1
l3 GigabitEthernet3/0/1
l3 HundredGigabitEthernet12/0/0
l3 HundredGigabitEthernet12/0/1
But it seems undesirable to have Gi3/0/1 be in l3 mode even though it's
the target of a cross connect, so I'm going to leave the behavior
stricter than VPP.
They now all return a list [ifname, iface]. If no interface was found
they return None,None. If one was found, they return the (string) name
and the dictionary with interface contents.
