蜂窝调制解调器：pppd 调制解调器挂断

2024-5-31 • tag-icon

我正在尝试通过我的 Multitech Multiconnect Dragonfly (MTQ-LVW3-B02) 建立与 Verizon 的蜂窝连接。我能够连接到 Verizon 网络并获取 IP 地址。问题是几秒钟后调制解调器挂断连接。

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 我通过 NetworkManager 使用 nmcli。我见过其他问题，人们认为该设备没有为 USB 提供足够的电力。不过，当设备离线时，我仍然在 lsusb 中看到该设备。

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

我尝试将 noipdefault 添加到选项文件中，但这似乎也不起作用。

我完全不知所措，任何帮助调试都会很棒。

答案1

我找到了答案。问题是，如果 Verizon 在 2 分钟内收到 10 个无效数据包，它将切断连接。问题是我没有正确对数据包进行 NAT，因为我也将其用作路由器。从桥接 LAN 发出的数据包被发送到源 IP 为 192.168.123.XXX 的 verizon。 Verizon（理所当然）认为这些数据包无效，并将关闭连接。解决方案是简单地添加此 Iptables 规则：

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

答案2

不是你问题的答案，但我在 AT&T 遇到了类似的问题，并在这里偶然寻找答案。

我的问题描述

5-7 分钟后，带有 Linux 主机的蜂窝调制解调器将从网络中断开。 Linux退出后会看到ppp0界面消失pppd。

原因

ppp0就我而言，我（不知不觉地）通过位于的文件为接口启用了 DHCP /etc/systemd/network/ppp0.network。 src=0.0.0.0 和 dst=255.255.255.255 的 DHCP 数据包从蜂窝调制解调器发出，AT&T 将其视为无效流量。

解决方案

我删除了该/etc/systemd/network/ppp0.network文件（以及 DHCP 设置）。这阻止了分离的发生。有关 pppd 的一切仍然正常工作（ppp0获得 IP 地址、正确的会话等）。

答案1

答案2

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