IPv4 address still looks configured when disconnected

[fhunleth]

In the logs, I see this:

12:35:02.036 [info]  RouteManager: set_connection_status wwan0 -> :disconnected (unknown)

And here's the result of ip:

iex(32)> cmd("ip link show wwan0")
6: wwan0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/[65534]
0
iex(33)> cmd("ip addr show wwan0")
6: wwan0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/[65534]
    inet6 fe80::ad0d:18be:b3f3:395a/64 scope link flags 800
       valid_lft forever preferred_lft forever
0
iex(34)> cmd("ip route show wwan0")
default via 192.168.7.1 dev wlan0  metric 20
0

No IPv4 address is showing.

However, here's what VintageNet.info shows:

Interface wwan0
  Type: VintageNetQMI
  Power: Starting up/on (34953 ms left)
  Present: true
  State: :configured (0:04:47)
  Connection: :disconnected (0:01:48)
  Addresses: 100.66.122.87/28, fe80::c2c2:7a7e:a846:fdcb/64