ONBOOT=yes but eth0 doesn't stay up after reboot

anon091 · 11-27-2013, 09:25 AM

chkconfig output (I had to take the colons out because it thought I was putting too many smileys in)

Quote:

network 0 off 1 off 2 on 3 on 4 on 5 on 6 off

---------- Post added 11-27-13 at 10:25 AM ----------

cat output

Quote:

NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=my-servers-name
GATEWAY=1.2.3.1 ***changed but is correct****

dmesg output

Quote:

eth0: Broadcom NetXtreme II BCM5708 1000Base-T (B2) PCI-X 64-bit 133MHz found at mem da000000, IRQ 16, node addr 000000000000 ***I changed to all zeros for this post***
bnx2: eth0: using MSI
ADDRCONF(NETDEV_UP): eth0: link is not ready
bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
eth0: no IPv6 routers present
bnx2: peth0: using MSI
ADDRCONF(NETDEV_UP): peth0: link is not ready
bnx2: peth0 NIC Copper Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON
ADDRCONF(NETDEV_CHANGE): peth0: link becomes ready
device peth0 entered promiscuous mode
type=1700 audit(1385032610.511:4): dev=peth0 prom=256 old_prom=0 auid=4294967295 ses=4294967295
xenbr0: port 2(peth0) entering forwarding state
eth0: no IPv6 routers present

SAbhi · 11-27-2013, 08:13 PM

Seems you are using ipv6

Quote:

NETWORKING_IPV6=yes

and here i see an issue.

Quote:

eth0: no IPv6 routers present

So i would suggest disabling IPv6 if you are not using it, to /etc/sysctl.conf --> net.ipv6.conf.eth0.disable_ipv6 = 1
Also comment out the lines for ipv6 in your /etc/sysconfig/network-scripts/ifcfgh-eth0.
you may need to reboot after this and check if your network works fine now.

anon091 · 01-13-2014, 03:29 AM

Here's my /etc/sysctl.conf, I don't see that setting in there, so does that mean I have to add it manually via vi?

Quote:

more /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward = 0

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0

# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0

# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1

# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1

# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536

# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536

# Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736

# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296

chrism01 · 01-13-2014, 04:49 PM

Try this http://www.unixtutorial.org/2009/12/...red-hat-linux/

anon091 · 01-15-2014, 03:33 AM

So do I just need to do the steps in that tutorial only then?

Also, I'm still not quite sure on why having ipv6 enabled would make eth0 drop off after the login screen comes up after a reboot.