Huawei E369 3G modem connected to RPi3 Model A+ and managed by NetworkManager cli:
- connects
- allows for pinging websites
- has working DNS
But does not allow for performing any http requests using CURL so:
ping -I ppp0 www.google.com works but
curl --interface ppp0 www.google.com does not.
The closest to my issue I found is this thread on Raspberry Pi forums but it is inconclusive to me what changed fixed it.
I've plugged modem on Mint and it works so I've compared outputs from nmcli device show side by side and found differences (MTU set to 0 and no routes on RPI):
Raspberry
GENERAL.DEVICE: ttyUSB1
GENERAL.TYPE: gsm
GENERAL.HWADDR: (unknown)
GENERAL.MTU: 0
GENERAL.STATE: 100 (connected)
GENERAL.CONNECTION: plus
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
IP4.ADDRESS[1]: 31.2.90.38/32
IP4.GATEWAY: 31.2.90.38
IP4.DNS[1]: 212.2.127.254
IP4.DNS[2]: 212.2.96.54
Mint Desktop
GENERAL.DEVICE: ttyUSB1
GENERAL.TYPE: gsm
GENERAL.HWADDR: (unknown)
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.CONNECTION: Plus Standard access 1
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/8
IP4.ADDRESS[1]: 46.169.152.5/32
IP4.GATEWAY: 46.169.152.5
IP4.ROUTE[1]: dst = 46.169.152.5/32, nh = 0.0.0.0, mt = 700
IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 46.169.152.5, mt = 700
IP4.DNS[1]: 212.2.127.254
IP4.DNS[2]: 212.2.96.52
For completeness I attach output from route -n:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 302 0 0 wlan0
0.0.0.0 31.2.90.38 0.0.0.0 UG 700 0 0 ppp0
31.2.90.38 0.0.0.0 255.255.255.255 UH 700 0 0 ppp0
192.168.1.0 0.0.0.0 255.255.255.0 U 302 0 0 wlan0
And mmcli -m 0:
/org/freedesktop/ModemManager1/Modem/0 (device id '1668e1f193c8f1f8cf30b97abb39eb278ed191d6')
-------------------------
Hardware | manufacturer: 'Huawei Technologies Co., Ltd.'
| model: 'E369'
| revision: '41.102.18.00.264'
| supported: 'gsm-umts'
| current: 'gsm-umts'
| equipment id: '868414002630527'
-------------------------
System | device: '/sys/devices/platform/soc/3f980000.usb/usb1/1-1'
| drivers: 'option1'
| plugin: 'Huawei'
| primary port: 'ttyUSB1'
| ports: 'ttyUSB0 (at), ttyUSB1 (at)'
-------------------------
Numbers | own : 'unknown'
-------------------------
Status | lock: 'none'
| unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)'
| state: 'connected'
| power state: 'on'
| access tech: 'edge'
| signal quality: '100' (recent)
-------------------------
Modes | supported: 'allowed: 2g; preferred: none
| allowed: 3g; preferred: none
| allowed: 2g, 3g; preferred: 2g
| allowed: 2g, 3g; preferred: 3g
| allowed: 2g, 3g; preferred: none'
| current: 'allowed: 2g, 3g; preferred: none'
-------------------------
Bands | supported: 'unknown'
| current: 'unknown'
-------------------------
IP | supported: 'ipv4'
-------------------------
3GPP | imei: '<imei>'
| enabled locks: 'none'
| operator id: '26001'
| operator name: '0050006C00750073'
| subscription: 'unknown'
| registration: 'home'
-------------------------
SIM | path: '/org/freedesktop/ModemManager1/SIM/0'
-------------------------
Bearers | paths: '/org/freedesktop/ModemManager1/Bearer/0'
and configuration in network manager system connections:
[connection]
id=Plus Standard access 1
uuid=b4c6111d-8735-46ed-9b51-60887a84ec7a
type=gsm
autoconnect=false
permissions=user:pi:;
interface=ttyUSB1
[gsm]
apn=www.plusgsm.pl
home-only=true
number=*99#
password-flags=0
username=plusgsm
[gsm-secrets]
password=plusgsm
[ipv4]
dns-search=
method=auto
[ipv6]
addr-gen-mode=stable-privacy
dns-search=
ip6-privacy=0
method=auto
