vshymanskyy opened a new issue, #7104:
URL: https://github.com/apache/incubator-nuttx/issues/7104
I have successfully configured a dual-interface connection on ESP32 (TTGO
T-Call):
```sh
nsh> pppd &
[...] CONNECT
nsh> ifconfig
wlan0 Link encap:Ethernet HWaddr 98:cd:ac:7a:81:e0 at UP
inet addr:192.168.10.236 DRaddr:192.168.10.1 Mask:255.255.255.0
ppp0 Link encap:TUN at UP
inet addr:10.97.10.240 DRaddr:192.168.254.254 Mask:0.0.0.0
IPv4 TCP UDP ICMP
Received 0073 0004 0005 0050
Dropped 001a 0000 0000 0000
IPv4 VHL: 0000 Frg: 0000
Checksum 0000 0000 0000 ----
TCP ACK: 0000 SYN: 0000
RST: 0004 0004
Type 0000 ---- ---- 0000
Sent 0063 0004 0003 005c
Rexmit ---- 0000 ---- ----
nsh> route
SEQ TARGET NETMASK ROUTER
1. 0.0.0.0 0.0.0.0 192.168.254.254
```
However, ping shows that modem connection is preferred over WiFi:
```log
nsh> ping 8.8.8.8
PING 8.8.8.8 56 bytes of data
56 bytes from 8.8.8.8: icmp_seq=0 time=630 ms
56 bytes from 8.8.8.8: icmp_seq=1 time=360 ms
56 bytes from 8.8.8.8: icmp_seq=2 time=490 ms
56 bytes from 8.8.8.8: icmp_seq=3 time=580 ms
56 bytes from 8.8.8.8: icmp_seq=4 time=370 ms
56 bytes from 8.8.8.8: icmp_seq=5 time=520 ms
56 bytes from 8.8.8.8: icmp_seq=6 time=630 ms
56 bytes from 8.8.8.8: icmp_seq=7 time=400 ms
56 bytes from 8.8.8.8: icmp_seq=8 time=550 ms
56 bytes from 8.8.8.8: icmp_seq=9 time=640 ms
10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
nsh> ifdown ppp0...OK
nsh> ping 8.8.8.8
PING 8.8.8.8 56 bytes of data
56 bytes from 8.8.8.8: icmp_seq=0 time=30 ms
56 bytes from 8.8.8.8: icmp_seq=1 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=2 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=3 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=4 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=5 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=6 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=7 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=8 time=20 ms
56 bytes from 8.8.8.8: icmp_seq=9 time=20 ms
10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
```
Changing the order of network configuration doesn't help.
It looks like on Linux, this is handled by route metrics (`ifmetric`
command).
Is there a way to achieve this on NuttX?
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