Networking woes.

Alex Priem (alexp@sci.kun.nl)
Sun, 04 Jan 1998 15:22:43 +0100

The latest kernels (2.1.7x) have some troubles with networking. From time
to time I get a lot of `UDP:bad checksum' warnings; also when the box is
doing nothing. Resetting the card with ifconfig usually helps for a while.
Also, problems seem to get worse when I get a `Tx timed out'.

Jan 4 00:27:08 esr9 kernel: UDP: bad checksum. From 83AE51B9:138 to 83AE53FF:13
8 ulen 222
Jan 4 01:03:24 esr9 kernel: UDP: bad checksum. From 83AE51B9:138 to 83AE53FF:13
8 ulen 222
Jan 4 01:52:17 esr9 kernel: UDP: bad checksum. From 83AE52C1:138 to 83AE53FF:13
8 ulen 222
Jan 4 02:20:58 esr9 kernel: UDP: bad checksum. From 83AE51B9:138 to 83AE53FF:13
8 ulen 222
Jan 4 02:39:58 esr9 kernel: UDP: bad checksum. From 83AE51B9:138 to 83AE53FF:13
8 ulen 222
Jan 4 02:44:33 esr9 kernel: UDP: bad checksum. From 83AE51B9:138 to 83AE53FF:13
8 ulen 222

Jan 4 03:17:27 esr9 kernel: eth0: Tx timed out, cable problem? TSR=0xc0, ISR=0x
0, t=36437.

Jan 4 14:22:59 esr9 kernel: TCPv4 bad checksum from 131.174.8.4:0201 to
131.174.81.75:03ff, len=1268/1268/1288
Jan 4 14:23:17 esr9 kernel: TCPv4 bad checksum from 206.184.214.34:0050 to
131.174.81.75:04f0, len=1480/1480/1500
Jan 4 14:23:32 esr9 last message repeated 5 times

# CONFIG_EXPERIMENTAL is not set

#
# Processor type and features
#
CONFIG_M586=y
# CONFIG_MATH_EMULATION is not set

#
# Loadable module support
#
CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KERNELD=y

[snip]

#
# Networking options
#
CONFIG_PACKET=m
# CONFIG_NETLINK is not set
# CONFIG_FIREWALL is not set
# CONFIG_NET_ALIAS is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_PNP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
# CONFIG_IP_ACCT is not set
# CONFIG_IP_MASQUERADE is not set
# CONFIG_IP_ROUTER is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_ALIAS is not set
CONFIG_SYN_COOKIES=y

#
# (it is safe to leave these untouched)
#
CONFIG_INET_RARP=m
CONFIG_IP_NOSR=y
CONFIG_SKB_LARGE=y

#
#
#
# CONFIG_IPX is not set
# CONFIG_ATALK is not set

#
# SCSI support
#
# CONFIG_SCSI is not set

#
# Network device support
#
CONFIG_NETDEVICES=y
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
CONFIG_NET_ETHERNET=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
CONFIG_NET_VENDOR_SMC=y
# CONFIG_WD80x3 is not set
CONFIG_ULTRA=m
# CONFIG_SMC9194 is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_NET_ISA is not set
CONFIG_NET_EISA=y
# CONFIG_PCNET32 is not set
# CONFIG_APRICOT is not set
# CONFIG_CS89x0 is not set
# CONFIG_DE4X5 is not set
# CONFIG_DEC_ELCP is not set
# CONFIG_DGRS is not set
CONFIG_EEXPRESS_PRO100=y
# CONFIG_NET_POCKET is not set
# CONFIG_FDDI is not set
# CONFIG_DLCI is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_RADIO is not set
# CONFIG_TR is not set