セルラーモデム：pppdモデムのハングアップ

Question

Multitech Multiconnect Dragonfly（MTQ-LVW3-B02）を介してVerizonへのセルラー接続を確立しようとしています。 Verizonsネットワークに接続してIPアドレスを取得できます。問題は、数秒後にモデムが接続を切断することです。

Mar 26 19:26:57 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm- ppp-plugin: (nm_ip6_up): sending IPv6 config to NetworkManager... Mar 26 19:26:57 localhost NetworkManager[2071]: Script /etc/ppp/ipv6-up started (pid 10367) Mar 26 19:26:57 localhost NetworkManager[2071]: Script /etc/ppp/ipv6-up finished (pid 10367), status = 0x0 Mar 26 19:26:57 localhost pppd[10353]: sent [IPCP ConfReq id=0x3 <addr

100.113.208.106> <ms-dns1 198.224.160.135> <ms-dns2 198.224.164.135>] Mar 26 19:26:57 localhost pppd[10353]: rcvd [IPV6CP ConfAck id=0x2 <addr fe80::0000:0052:19b4:d801>] Mar 26 19:26:57 localhost pppd[10353]: local LL address fe80::0000:0052:19b4:d801 Mar 26 19:26:57 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_ip_up): ip-up event Mar 26 19:26:57 localhost pppd[10353]: remote LL address fe80::6dac:d335:a09b:525b Mar 26 19:26:57 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_ip_up): sending IPv4 config to NetworkManager... Mar 26 19:26:57 localhost NetworkManager[2071]: Script /etc/ppp/ip-up started (pid 10369) Mar 26 19:26:57 localhost pppd[10353]: Script /etc/ppp/ipv6-up started (pid 10367) Mar 26 19:26:57 localhost pppd[10353]: Script /etc/ppp/ipv6-up finished (pid 10367), status = 0x0 Mar 26 19:26:57 localhost pppd[10353]: rcvd [IPCP ConfAck id=0x3 <addr 100.113.208.106> <ms-dns1 198.224.160.135> <ms-dns2 198.224.164.135>] Mar 26 19:26:57 localhost NetworkManager[2071]: <info> [1522092417.0839] ppp-manager: (IPv4 Config Get) reply received. Mar 26 19:26:57 localhost pppd[10353]: local IP address 100.113.208.106 Mar 26 19:26:57 localhost pppd[10353]: remote IP address 100.113.208.106 Mar 26 19:26:57 localhost pppd[10353]: primary DNS address 198.224.160.135 Mar 26 19:26:57 localhost pppd[10353]: secondary DNS address 198.224.164.135 Mar 26 19:26:57 localhost pppd[10353]: Script /etc/ppp/ip-up started (pid 10369) Mar 26 19:26:57 localhost pppd[10353]: Script /etc/ppp/ip-up finished (pid 10369), status = 0x0 Mar 26 19:26:57 localhost NetworkManager[2071]: Script /etc/ppp/ip-up finished (pid 10369), status = 0x0 Mar 26 19:26:57 localhost NetworkManager[2071]: <info> [1522092417.1068] policy: set 'vzw' (ppp0) as default for IPv4 routing and DNS Mar 26 19:26:57 localhost dnsmasq[2407]: using nameserver 198.224.160.135#53(via ppp0) Mar 26 19:26:57 localhost dnsmasq[2407]: using nameserver 198.224.164.135#53(via ppp0) Mar 26 19:26:57 localhost nm-dispatcher: req:4 'up' [ppp0]: new request (1 scripts) Mar 26 19:26:57 localhost nm-dispatcher: req:4 'up' [ppp0]: start running ordered scripts... Mar 26 19:26:57 localhost NetworkManager[2071]: <info> [1522092417.1530] policy: set 'vzw' (ppp0) as default for IPv6 routing and DNS Mar 26 19:27:03 localhost pppd[10353]: Modem hangup Mar 26 19:27:03 localhost pppd[10353]: Connect time 0.1 minutes. Mar 26 19:27:03 localhost pppd[10353]: Sent 1302 bytes, received 1196 bytes. Mar 26 19:27:03 localhost pppd[10353]: Script /etc/ppp/ip-down started (pid 10523) Mar 26 19:27:03 localhost pppd[10353]: cif6addr: ioctl(SIOCDIFADDR): No such address Mar 26 19:27:03 localhost NetworkManager[2071]: Script /etc/ppp/ip-down started (pid 10523) Mar 26 19:27:03 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 8 / phase 'network' Mar 26 19:27:03 localhost pppd[10353]: Script /etc/ppp/ipv6-down started (pid 10527) Mar 26 19:27:03 localhost NetworkManager[2071]: Script /etc/ppp/ipv6-down started (pid 10527) Mar 26 19:27:03 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase 'establish' Mar 26 19:27:03 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect' Mar 26 19:27:03 localhost pppd[10353]: Connection terminated. Mar 26 19:27:03 localhost pppd[10353]: Connect time 0.1 minutes. Mar 26 19:27:03 localhost pppd[10353]: Sent 1302 bytes, received 1196 bytes. Mar 26 19:27:03 localhost nm-dispatcher: req:5 'down' [ppp0]: new request (1 scripts) Mar 26 19:27:03 localhost nm-dispatcher: req:5 'down' [ppp0]: start running ordered scripts... Mar 26 19:27:03 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 1 / phase 'dead' Mar 26 19:27:03 localhost NetworkManager[2071]: Script /etc/ppp/ip-down finished (pid 10523), status = 0x0 Mar 26 19:27:03 localhost NetworkManager[2071]: Script /etc/ppp/ipv6-down finished (pid 10527), status = 0x0 Mar 26 19:27:03 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_exit_notify): cleaning up Mar 26 19:27:03 localhost pppd[10353]: Script /etc/ppp/ip-down finished (pid 10523), status = 0x0 Mar 26 19:27:03 localhost NetworkManager[2071]: <info> [1522092423.7625] devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Mar 26 19:27:03 localhost pppd[10353]: Script /etc/ppp/ipv6-down finished (pid 10527), status = 0x0 Mar 26 19:27:03 localhost pppd[10353]: Exit. Mar 26 19:27:17 localhost NetworkManager[2071]: <info> [1522092437.1293] ppp-manager: starting PPP connection Mar 26 19:27:17 localhost NetworkManager[2071]: <info> [1522092437.1344] ppp-manager: pppd started with pid 10576 Mar 26 19:27:17 localhost pppd[10576]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:17 localhost NetworkManager[2071]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:17 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (plugin_init): initializing Mar 26 19:27:17 localhost pppd[10576]: pppd 2.4.7 started by root, uid 0 Mar 26 19:27:17 localhost pppd[10576]: Device ttyACM0 is locked by pid 10520 Mar 26 19:27:17 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection' Mar 26 19:27:17 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 1 / phase 'dead' Mar 26 19:27:17 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_exit_notify): cleaning up Mar 26 19:27:17 localhost pppd[10576]: Exit. Mar 26 19:27:17 localhost NetworkManager[2071]: <warn> [1522092437.1605] ppp-manager: pppd pid 10576 exited with error: Serial port lock failed Mar 26 19:27:28 localhost NetworkManager[2071]: <info> [1522092448.3542] ppp-manager: starting PPP connection Mar 26 19:27:28 localhost NetworkManager[2071]: <info> [1522092448.3592] ppp-manager: pppd started with pid 10589 Mar 26 19:27:28 localhost pppd[10589]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:28 localhost NetworkManager[2071]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:28 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (plugin_init): initializing Mar 26 19:27:28 localhost pppd[10589]: pppd 2.4.7 started by root, uid 0 Mar 26 19:27:28 localhost pppd[10589]: Device ttyACM0 is locked by pid 10520 Mar 26 19:27:28 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection' Mar 26 19:27:28 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 1 / phase 'dead' Mar 26 19:27:28 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_exit_notify): cleaning up Mar 26 19:27:28 localhost pppd[10589]: Exit. Mar 26 19:27:28 localhost NetworkManager[2071]: <warn> [1522092448.3865] ppp-manager: pppd pid 10589 exited with error: Serial port lock failed Mar 26 19:27:39 localhost NetworkManager[2071]: <info> [1522092459.7109] ppp-manager: starting PPP connection Mar 26 19:27:39 localhost NetworkManager[2071]: <info> [1522092459.7159] ppp-manager: pppd started with pid 10592 Mar 26 19:27:39 localhost pppd[10592]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:39 localhost NetworkManager[2071]: Plugin /usr/lib/pppd/2.4.7/nm-pppd-plugin.so loaded. Mar 26 19:27:39 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (plugin_init): initializing Mar 26 19:27:39 localhost pppd[10592]: pppd 2.4.7 started by root, uid 0 Mar 26 19:27:39 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection' Mar 26 19:27:39 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 1 / phase 'dead' Mar 26 19:27:39 localhost NetworkManager[2071]: nm-pppd-plugin-Message: nm-ppp-plugin: (nm_exit_notify): cleaning up Mar 26 19:27:39 localhost NetworkManager[2071]: <warn> [1522092459.7426] ppp-manager: pppd pid 10592 exited with error: Serial port lock failed Mar 26 19:27:39 localhost pppd[10592]: Device ttyACM0 is locked by pid 10520 Mar 26 19:27:39 localhost pppd[10592]: Exit. Mar 26 19:28:00 localhost NetworkManager[2071]: <warn> [1522092480.2188] ppp-manager: pppd timed out or didn't initialize our dbus module

NetworkManagerを介してnmcliを使用しています。デバイスがUSBに十分な電力を供給していないと人々が信じている他の質問を見たことがあります。ただし、オフラインでもlsusbにデバイスが表示されます。

lsusb Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 0424:5744 Standard Microsystems Corp. Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 0424:2740 Standard Microsystems Corp. Bus 001 Device 004: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Bus 001 Device 003: ID 1bc7:0036 Telit Wireless Solutions Bus 001 Device 002: ID 0424:2744 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

オプションファイルにnoipdefaultを追加しようとしましたが、それも機能しなかったようです。

私は完全に途方に暮れていて、デバッグの助けがあれば素晴らしいと思います。

zlb323 · Accepted Answer

私は答えを見つけました。問題は、Verizonが2分間に10個の無効なパケットを受信すると、接続を切断することでした。問題は、これをルーターとしても使用していたため、パケットを適切にNATしていないことでした。ブリッジLANから送信されたパケットは、送信元IPが192.168.123.XXXのverizonに送信されていました。 Verizonは（当然のことながら）これらのパケットは無効であり、接続を遮断すると判断しました。解決策は、このIptablesルールを追加することでした。

iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

bjornruffians · Answer

あなたの質問に対する答えではありませんが、私はAT＆Tで同様の問題に遭遇し、ここで答えを探してつまずきました。

私の問題の説明

5〜7分後、Linuxホストを備えたセルモデムがネットワークから切り離されます。 Linuxは、pppdが終了すると、ppp0インターフェースが消えることを確認します。

原因

私の場合、ppp0のファイルを介して、/etc/systemd/network/ppp0.networkインターフェイスのDHCPを（無意識のうちに）有効にしました。 src = 0.0.0.0およびdst = 255.255.255.255のDHCPパケットは、AT＆Tが無効なトラフィックと見なしているセルモデムから送信されていました。

解決策

/etc/systemd/network/ppp0.networkファイル（およびDHCP設定）を削除しました。これにより、デタッチが発生しなくなりました。 pppdに関するすべてはまだ正常に機能していました（ppp0はIPアドレス、適切なセッションなどを取得しました）。