U ZTE MF823 jde sice použít příkaz "/port firmware set ignore-directip-modem=yes" a zmizí po něm i LTE a naskočí ppp-out1, ale nefunguje.
Tohle je klasický hilink modem se vším všudy, včetně komplet linux routeru v tom USB tokenu integrovaném.
Fakticky se nedělá NAT v tom modemu, ten se dělá u operátora. Modem je jen bridge mezi LTE sítí a virtuálním ethernetem na USB, takže PPP nepotřebuješ, je ti k ničemu.
Viz (login je root/zte9x15):
Trying 192.168.0.1...
Connected to 192.168.0.1.
Escape character is '^]'.
OpenEmbedded Linux 9615-cdp
msm 20140722 9615-cdp
9615-cdp login: root
Password:
Trying 192.168.0.1...
Connected to 192.168.0.1.
Escape character is '^]'.
OpenEmbedded Linux 9615-cdp
msm 20140722 9615-cdp
9615-cdp login: root
Password:
Login incorrect
9615-cdp login: root
Password:
root@9615-cdp:~# uname -a
Linux 9615-cdp 3.0.21+ #1 PREEMPT Tue Jul 22 21:54:12 CST 2014 armv7l GNU/Linux
root@9615-cdp:~# ip -4 a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
inet 127.0.0.1/8 scope host lo
2: rmnet0: <UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
inet 192.168.0.2/24 scope global rmnet0
10: usb0: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_
fast state UP qlen 1000
inet 192.168.0.1/24 brd 192.168.0.255 scope global usb0
root@9615-cdp:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 23424 12628 10796 54% /
none 23488 8 23480 0% /dev
tmpfs 23488 0 23488 0% /dev/shm
/dev/mtdblock19 48384 23064 25320 48% /usr
/dev/mtdblock11 20736 1180 19556 6% /cache
/dev/mtdblock16 30464 12024 18440 39% /usr/zte_web
root@9615-cdp:~# cat /proc/cpuinfo
Processor : ARMv7 Processor rev 1 (v7l)
BogoMIPS : 274.02
Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc05
CPU revision : 1
Hardware : QCT MSM9615 CDP
Revision : 0000
Serial : 0000000000000000