I'm hitting strange issue with connecting to mobile broadband using sim5300 gsm modem. I setup gsm connection (set apn, username,password) and when put connection up I get following snippet from ppp:
7382 sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
7383 sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
7384 sent [IPV6CP ConfReq id=0x1 <addr fe80::402e:4512:98f5:454e>]
7385 rcvd [LCP ProtRej id=0x2 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15]
7386 Protocol-Reject for 'Compression Control Protocol' (0x80fd) received
7387 NetworkManager[495]: <info> [1553544907.3200] manager: (ppp0): new Generic device (/org/freedesktop/NetworkManager/Devices/5)
7388 NetworkManager[495]: <info> [1553544907.4395] devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
7389 NetworkManager[495]: <info> [1553544907.4398] device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
7390 ModemManager[241]: <debug> [1553544907.441723] [../../ModemManager-1.6.4/src/mm-base-manager.c:364] device_added(): (net/ppp0): could not get port's parent device
7391 NetworkManager[495]: <debug> [1553544907.4582] platform-linux: UDEV event: action 'add' subsys 'net' device 'ppp0' (7); seqnum=1487
7392 NetworkManager[495]: <debug> [1553544907.4594] platform: signal: link changed: 7: ppp0 <NOARP,DOWN;pointopoint,multicast,noarp> mtu 1500 arp 512 unknown/ppp init addrgenmode eui64 driver ppp rx:0,0 tx:0,0
7393 NetworkManager[495]: <debug> [1553544907.4598] device[0x2988f0] (ppp0): queued link change for ifindex 7
7394 NetworkManager[495]: <debug> [1553544907.4757] device[0x2988f0] (ppp0): unmanaged: flags set to [platform-init,by-default,!sleeping,!loopback,!user-settings=0x110/0x159/unmanaged, set-managed [user-settings=0x40])
7395 NetworkManager[495]: <debug> [1553544907.4761] device[0x2988f0] (ppp0): unmanaged: flags set to [by-default,!sleeping,!loopback,!platform-init,!user-settings=0x100/0x159/manageable, set-managed [platform-init=0x10], reason managed)
7396 NetworkManager[495]: <debug> [1553544907.5040] device[0x2988f0] (ppp0): ip4-config: update (commit=0, routes-full-sync=0, new-config=0x2bf0b8)
7397 NetworkManager[495]: <debug> [1553544907.5363] device[0x2988f0] (ppp0): ip4-config: set IP4Config instance (/org/freedesktop/NetworkManager/IP4Config/5)
7398 NetworkManager[495]: <debug> [1553544907.5390] dns-mgr: (device_ip4_config_changed): queueing DNS updates (1)
7399 NetworkManager[495]: <debug> [1553544907.5411] dns-mgr: (device_ip4_config_changed): DNS configuration did not change
7400 NetworkManager[495]: <debug> [1553544907.5414] dns-mgr: (device_ip4_config_changed): no DNS changes to commit (0)
7401 NetworkManager[495]: <debug> [1553544907.5430] device[0x2988f0] (ppp0): ip6-config: update (commit=0, routes-full-sync=0, new-config=0x2d9290)
7402 NetworkManager[495]: <debug> [1553544907.5594] device[0x2988f0] (ppp0): ip6-config: set IP6Config instance (/org/freedesktop/NetworkManager/IP6Config/5)
7403 NetworkManager[495]: <debug> [1553544907.5602] dns-mgr: (device_ip6_config_changed): queueing DNS updates (1)
7404 NetworkManager[495]: <debug> [1553544907.5622] dns-mgr: (device_ip6_config_changed): DNS configuration did not change
7405 NetworkManager[495]: <debug> [1553544907.5624] dns-mgr: (device_ip6_config_changed): no DNS changes to commit (0)
7406 NetworkManager[495]: <debug> [1553544907.6086] device[0x2988f0] (ppp0): emit RECHECK_ASSUME signal
7407 rcvd [LCP TermReq id=0x3]
7408 LCP terminated by peer
7409 nm-pppd-plugin-Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
7410 sent [LCP TermAck id=0x3]
7411 Modem hangup
basically get LCP terminated by peer (but not sure what that means). I have debug logs for ModemManager also but it just continue getting signal level and that's it. Any idea how to debug this further? Thanks.
BR,
marek
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Marek Belisko - OPEN-NANDRA
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