Re: [CentOS] Centos6.4 routing problem - Discuss

5 Jun 2013


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----- Reply message -----
From: "Johan Vermeulen" jvermeulen@cawdekempen.be
To: "CentOS mailing list" centos@centos.org
Subject: [CentOS] Centos6.4 routing problem
Date: Tue, Jun 4, 2013 16:13
hello Mark,
thanks for the help.
Op 04-06-13 15:56, m.roth@5-cent.us schreef:
...
Johan Vermeulen wrote:
...
dear All,
I'm facing this routing problem, the setup is actualy part of ltsp, but
I think this problem is Centos-specific.
The server is a Dell Poweredge R210. The install is standard 6.4, updated.
I have one nic facing the public internet:
First, we always have BOOTPROTO set - in your case, assuming you're
getting em1's IP from DHCP, you should have that; in the case of em2, it's
BOOTPROTO=static. As it is, I'd think (without testing) that em1 is trying
to present a reserved IP to the 'Net, which is a no-no.
both ifcfg's now have BOOTPROTO=static
and I restarted network and dhcpd.
...
...
vi /etc/sysconfig/network-scripts/ifcfg-em1
DEVICE=em1
BOOTPROTO=none
HWADDR=d4:ae:52:c1:28:2b
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
UUID="cdfe1d58-c56c-47fc-8a93-5df2e168d176"
IPV6INIT=no
USERCTL=no
DNS2=195.238.2.22
DNS1=192.168.66.1
IPADDR=192.168.66.5
NETMASK=255.255.255.128
GATEWAY=192.168.66.1
and one nic serving the lan and dhpcd.
vi /etc/sysconfig/network-scripts/ifcfg-em2
DEVICE=em2
BOOTPROTO=none
HWADDR=d4:ae:52:c1:28:2c
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
UUID="e72a17b6-fb5f-43f0-9136-fa4d92b542ae"
IPADDR=192.168.70.129
NETMASK=255.255.255.128
IPV6INIT=no
USERCTL=no
<snip>
Secondly, what does route show?
    mark


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[root@centoshofkwartier ~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref Use Iface
192.168.70.128  *               255.255.255.128 U     0 0        0 em2
192.168.66.0    *               255.255.255.128 U     0 0        0 em1
link-local      *               255.255.0.0     U     1002 0        0 em1
link-local      *               255.255.0.0     U     1003 0        0 em2
default         192.168.66.1    0.0.0.0         UG    0 0        0 em1
greetings, J.
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