Very often, the first time I try to connect to my ISP (using
RP3), PPP will make a connection and log on but immediately
get a SIGHUP after the Connect: ppp0 <--> /dev/ttyS2 line.
This doesn't happen with KPPP or with a manually created
ppp-on script. It did, however, also happen with the
original RH 5.x netcfg script, presumably with the netcfg
script in 6.1 as well.
This is fixed in the errata pppd release.