Can not delete/add default route

Question

I have a Raspi connected through WiFi in which I plug-in a Huawei stick I use for SMS sending. Unfortunately when doing this, it changes the routes to the following:

pi@raspberrypi:/opt/pi/printer $ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         hi.link         0.0.0.0         UG    0      0        0 eth1
default         hi.link         0.0.0.0         UG    204    0        0 eth1
default         10.0.2.1        0.0.0.0         UG    303    0        0 wlan0
10.0.2.0        *               255.255.255.0   U     303    0        0 wlan0
192.168.8.0     *               255.255.255.0   U     204    0        0 eth1

One would guess that it should be easy to remove the route, but it doesn't work:

pi@raspberrypi:/opt/pi/printer $ ping hi.link
PING hi.link (192.168.8.1) 56(84) bytes of data.
64 bytes from hi.link (192.168.8.1): icmp_seq=1 ttl=64 time=1.05 ms
pi@raspberrypi:/opt/pi/printer $ route del default via  192.168.8.0
# does NOT work, displays the usage howto

I can only get this working by adding an additional route:

pi@raspberrypi:/opt/pi/printer $ route add default gw 10.0.2.1 wlan0

Question: how do I either prevent this hi.link route being created when the Huawei stick is plugged in respective how can I delete this route

Many thanks!

Answer 1

Either using the route command:

route del default gw  192.168.8.0 dev eth1

or better ip command if available:

ip route del default via 192.168.8.0 dev eth1

The ip command is easier to use because add and del usually accept the same syntax as printed by show.