Here is an update on my PPP problem:
* ppp 2.1.2 on SunOS 4.1.3
* ppp 2.1.2d on a Linux host
* linux 1.3.21 compiled with gcc 2.7.0/ELF
I can use PPP normally with exception of rlogin. When I try to rlogin
from a Linux host to hosts on the other side of PPP link, connection
has ~50% chance of getting stuck: output from rlogin is fine (I can see
/etc/motd) but nothing I am typing gets to remote host. netstat shows
connections with a big send queue that don't go away even hours after I
kill rlogin process. For example:
ariel:/usr/src/linux/net/ipv4> netstat | less
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (State) User
tcp 0 18 ariel-cs:1021 gd:login FIN_WAIT1 root
I recompiled rlogin and deleted all the references to handling out-of-band data
and the problem went away - along with rlogin ability to progorate window size,
of course. This and the fact that no other applications have this problem makes
me believe the problem is handling out-of-band data in new networking code.
Also, I was only able to reproduce the problem with a PPP connection. But since
the only other interface I have is loopback, it doesn't say much :)
Here is my kernel configuration in case it helps:
#
# Automatically generated make config: don't edit
#
#
# General setup
#
# CONFIG_MATH_EMULATION is not set
CONFIG_BLK_DEV_FD=y
CONFIG_ST506=y
#
# Please see drivers/block/README.ide for help/info on IDE drives
#
# CONFIG_BLK_DEV_HD is not set
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_IDECD is not set
# CONFIG_BLK_DEV_XD is not set
CONFIG_NET=y
# CONFIG_MAX_16M is not set
# CONFIG_PCI is not set
CONFIG_SYSVIPC=y
CONFIG_BINFMT_ELF=y
CONFIG_KERNEL_ELF=y
CONFIG_M486=y
#
# Loadable module support
#
# CONFIG_MODVERSIONS is not set
#
# Networking options
#
CONFIG_INET=y
# CONFIG_IP_FORWARD is not set
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_FIREWALL is not set
# CONFIG_IP_ACCT is not set
# CONFIG_NET_IPIP is not set
#
# (it is safe to leave these untouched)
#
# CONFIG_INET_PCTCP is not set
# CONFIG_INET_RARP is not set
# CONFIG_INET_SNARL is not set
# CONFIG_TCP_NAGLE_OFF is not set
CONFIG_IP_NOSR=y
CONFIG_SKB_LARGE=y
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_AX25 is not set
#
# SCSI support
#
# CONFIG_SCSI is not set
#
# Skipping SCSI configuration options...
#
#
# Network device support
#
CONFIG_NETDEVICES=y
CONFIG_DUMMY=y
# CONFIG_SLIP is not set
CONFIG_PPP=y
# CONFIG_PPP_LOTS is not set
# CONFIG_PLIP is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_ALPHA is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_ISA is not set
# CONFIG_NET_EISA is not set
# CONFIG_NET_POCKET is not set
# CONFIG_TR is not set
#
# CD-ROM drivers (not for SCSI or IDE/ATAPI drives)
#
# CONFIG_CDU31A is not set
CONFIG_MCD=y
# CONFIG_MCDX is not set
# CONFIG_SBPCD is not set
# CONFIG_AZTCD is not set
# CONFIG_CDU535 is not set
# CONFIG_GSCD is not set
# CONFIG_CM206 is not set
# CONFIG_OPTCD is not set
# CONFIG_SJCD is not set
#
# Filesystems
#
# CONFIG_MINIX_FS is not set
# CONFIG_EXT_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_XIA_FS is not set
CONFIG_MSDOS_FS=y
# CONFIG_UMSDOS_FS is not set
CONFIG_PROC_FS=y
CONFIG_NFS_FS=y
CONFIG_ISO9660_FS=y
# CONFIG_HPFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_SMB_FS is not set
#
# character devices
#
# CONFIG_CYCLADES is not set
CONFIG_PRINTER=y
# CONFIG_BUSMOUSE is not set
# CONFIG_PSMOUSE is not set
# CONFIG_MS_BUSMOUSE is not set
# CONFIG_ATIXL_BUSMOUSE is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_FTAPE is not set
#
# Sound
#
CONFIG_SOUND=y
#
# Kernel hacking
#
# CONFIG_PROFILE is not set
--
Snow ^oo^ Cat <snowcat@gd.cs.CSUFresno.EDU>
_ -> <- aka Oleg Kibirev <oleg@gd.cs.CSUFresno.EDU>
___(_) _ _)_
/ _)
\_.-._
|___/ Purr!