Re: Unreliable 4G LTE interface IP address

Hi Daniel, Hmm, that might be caused by running the following command in a shell script in systemd service, the reason I had to run it in systemd service because I could not get faulty occurred when I run following command in console command line, running in command line seems much stable than to run it in systemd service. CONNMAN_DHCP_DEBUG=1 connmand -n -d src/dhpc.c:src/network.c:plugins/ofono.c > /data/log/connman.log 2>&1 Yes, here is I run tail -f /data/log/connman.log: Disconnect antenna (No IP) [14138.869278] ieee80211 phy0: mwifiex_cfg80211_sched_scan_start : Invalid Sched _scan parameters connmand[1272]: wwan0 {del} route 0.0.0.0 gw 10.116.101.194 scope 0 <UNIVERSEconnmand[1272]: wwan0 {del} route 10.4.149.70 gw 10.116.101.194 scope 0 <UNIVERS Econnmand[1272]: wwan0 {del} route 10.4.27.70 gw 10.116.101.194 scope 0 <UNIVERSE connmand[1272]: wwan0 {del} route 10.116.101.194 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {del} address 10.116.101.193/30 label wwan0 connmand[1272]: wwan0 {del} route 10.116.101.192 gw 0.0.0.0 scope 253 <LINK Connect antenna connmand[1272]: ipconfig state 3 ipconfig method 1 connmand[1272]: wwan0 {add} address 10.116.101.193/30 label wwan0 family 2 connmand[1272]: wwan0 {add} route 10.116.101.192 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {add} route 10.116.101.194 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {add} route 10.4.149.70 gw 10.116.101.194 scope 0 <UNIVERS Econnmand[1272]: wwan0 {add} route 10.4.27.70 gw 10.116.101.194 scope 0 <UNIVERSE connmand[1272]: wwan0 {add} route 0.0.0.0 gw 10.116.101.194 scope 0 <UNIVERSEconnmand[1272]: wwan0 {del} route 0.0.0.0 gw 10.116.101.194 scope 0 <UNIVERSEconnmand[1272]: wwan0 {del} route 10.4.149.70 gw 10.116.101.194 scope 0 <UNIVERS Econnmand[1272]: wwan0 {del} route 10.4.27.70 gw 10.116.101.194 scope 0 <UNIVERSE connmand[1272]: wwan0 {del} route 10.116.101.194 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {del} address 10.116.101.193/30 label wwan0 connmand[1272]: wwan0 {del} route 10.116.101.192 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: ipconfig state 3 ipconfig method 1 connmand[1272]: wwan0 {add} address 10.116.101.193/30 label wwan0 family 2 connmand[1272]: wwan0 {add} route 10.116.101.192 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {add} route 10.116.101.194 gw 0.0.0.0 scope 253 <LINKconnmand[1272]: wwan0 {add} route 10.4.149.70 gw 10.116.101.194 scope 0 <UNIVERS Econnmand[1272]: wwan0 {add} route 10.4.27.70 gw 10.116.101.194 scope 0 <UNIVERSE connmand[1272]: wwan0 {add} route 0.0.0.0 gw 10.116.101.194 scope 0 <UNIVERSEconnmand[1272]: wwan0 {add} route 212.227.81.55 gw 10.116.101.194 scope 0 <UNIVE RSEconnmand[1272]: wwan0 {del} route 212.227.81.55 gw 10.116.101.194 scope 0 <UNIVE RSE Repeated ... until no IP address comming, there was no more output of above messages either, looks like some connman polling or callback process stopped despite connmand was still running: # systemctl status connman * connman.service - Connection service Loaded: loaded (8;;file://solar/lib/systemd/system/connman.service/lib/system d/system/connman.service8;;; enabled; vendor preset: enabled) Active: active (running) since Wed 2020-12-30 09:15:32 UTC; 14min ago Main PID: 1271 (sa_connman_debu) CGroup: /system.slice/connman.service |-1271 /bin/sh /data/bin/sa_connman_debug.sh `-1272 connmand -n -d src/dhpc.c:src/network.c:plugins/ofono.c Dec 30 09:26:37 solar connmand[1272]: wwan0 {add} route 10.4.27.70 gw 10.116.101 .194 scope 0 <UNIVERSEDec 30 09:26:37 solar connmand[1272]: wwan0 {add} route 0.0.0.0 gw 10.116.101.19 4 scope 0 <UNIVERSEDec 30 09:26:39 solar connmand[1272]: wwan0 {add} route 212.227.81.55 gw 10.116. 101.194 scope 0 <UNIVERSEDec 30 09:26:41 solar connmand[1272]: wwan0 {del} route 212.227.81.55 gw 10.116. 101.194 scope 0 <UNIVERSEDec 30 09:29:39 solar connmand[1272]: wwan0 {del} route 0.0.0.0 gw 10.116.101.19 4 scope 0 <UNIVERSEDec 30 09:29:39 solar connmand[1272]: wwan0 {del} route 10.4.149.70 gw 10.116.10 1.194 scope 0 <UNIVERSEDec 30 09:29:39 solar connmand[1272]: wwan0 {del} route 10.4.27.70 gw 10.116.101 .194 scope 0 <UNIVERSEDec 30 09:29:39 solar connmand[1272]: wwan0 {del} route 10.116.101.194 gw 0.0.0. 0 scope 253 <LINKDec 30 09:29:39 solar connmand[1272]: wwan0 {del} address 10.116.101.193/30 labe l wwan0 Dec 30 09:29:39 solar connmand[1272]: wwan0 {del} route 10.116.101.192 gw 0.0.0. 0 scope 253 <LINK Thank you. Kind regards, Jupiter