Workaround for possible race in pyroute2.ipdb
In simulation.py, add a call to initdb() to force-refresh the netlink
socket and the interface list.
@@ -66,6 +66,7 @@ class Simulation(object):
if out_ifc: out_ifc.up().commit()
ns_ipdb.interfaces.lo.up().commit()
+ ns_ipdb.initdb()
in_ifc = ns_ipdb.interfaces[in_ifname]
with in_ifc as v:
v.ifname = ns_ifc
