pppd connect '/usr/sbin/chat -f DIAL_240' 115200
/dev/modem
pppd connect '/usr/sbin/chat -f DIAL_240'
:192.168.3.219 115200 /dev/modem
arp
root
-detach
64 bytes from 192.168.3.219: icmp_seq=0 ttl=15
time=197.0 ms
64 bytes from 192.168.3.219: icmp_seq=1 ttl=15
time=180.0 ms
kill -TERM 'cat /var/run/ppp0.pid'