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March 2013

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Subject:
Re: udev renaming ethernet adapaters to vlan names?
From:
Konstantin Olchanski <[log in to unmask]>
Reply To:
Konstantin Olchanski <[log in to unmask]>
Date:
Fri, 15 Mar 2013 17:20:07 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (104 lines) 
On Fri, Mar 15, 2013 at 07:12:06PM -0400, Paul Robert Marino wrote:
>    You don't need the ".203" in the udev rule you just need "eth1" but
>    that said you dont need the udev rule either the HWADDR field in the
>    network scripts handles it for you and overrides the dev rules.



To disable the "persistent naming" "helpful" function, do this:

touch /etc/udev/rules.d/75-persistent-net-generator.rules
rm /etc/udev/rules.d/70-persistent-net.rules
#shutdown -r now



K.O.



> 
>    -- Sent from my HP Pre3
>    __________________________________________________________________
> 
>    On Mar 14, 2013 10:06 PM, Steven C Timm <[log in to unmask]> wrote:
>    Stephen--what is the architecture of this machine? Are you running
>    32-bit on a 64bit machine?
>    Steve?
>    -----Original Message-----
>    From: [log in to unmask]
>    [mailto:[log in to unmask]] On Behalf Of
>    Steven Haigh
>    Sent: Thursday, March 14, 2013 7:31 PM
>    To: scientific-linux-users
>    Subject: udev renaming ethernet adapaters to vlan names?
>    Hi all,
>    This one has been going on for a while... Every time I install an
>    updated kernel on this specific machine, I get a udev rule inserted in
>    /etc/udev/rules.d/70-persistent-net.rules
>    That rule is:
>    # PCI device 0x10ec:0x8169 (r8169) (custom name provided by external
>    tool) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
>    ATTR{address}=="00:18:4d:79:65:47", ATTR{type}=="1", KERNEL=="eth*",
>    NAME="eth1.203"
>    Now whats strange here is udev renames the physical ethernet adapter
>    (eth0) to eth1.203 - which is (was?) a working VLAN.
>    So, the network config:
>    # cat ifcfg-eth0
>    DEVICE="eth0"
>    BOOTPROTO="static"
>    BROADCAST="192.168.1.255"
>    HWADDR="00:40:63:EA:B7:21"
>    IPADDR="192.168.1.1"
>    NETMASK="255.255.255.0"
>    ONBOOT="yes"
>    # cat ifcfg-eth1
>    # Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet
>    TYPE=Ethernet
>    DEVICE=eth1
>    BOOTPROTO=static
>    ONBOOT=no
>    HWADDR=00:18:4d:79:65:47
>    # cat ifcfg-eth1.10
>    # Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet
>    TYPE=Ethernet
>    DEVICE=eth1.10
>    BOOTPROTO=static
>    ONBOOT=yes
>    IPADDR=10.1.1.254
>    NETMASK=255.255.255.0
>    VLAN=yes
>    IPV6INIT=yes
>    IPV6_AUTOCONF=no
>    IPV6ADDR=2002:cb38:f71b:2::1
>    IPV6FORWARDING=yes
>    # cat ifcfg-eth1.203
>    # Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet
>    TYPE=Ethernet
>    DEVICE=eth1.203
>    BOOTPROTO=static
>    ONBOOT=yes
>    IPADDR=203.56.246.94
>    NETMASK=255.255.255.240
>    VLAN=yes
>    IPV6INIT=yes
>    IPV6_AUTOCONF=no
>    IPV6ADDR=2002:cb38:f71b:1::1
>    IPV6FORWARDING=yes
>    As you can see, there isn't very much out of a normal ethernet setup -
>    but the where the udev rule comes from is beyond me. It happens
>    guaranteed every time yum installs a kernel update.
>    Does anyone have any pointers on where to chase this down to?
>    --
>    Steven Haigh
>    Email: [log in to unmask]
>    Web: https://www.crc.id.au
>    Phone: (03) 9001 6090 - 0412 935 897
>    Fax: (03) 8338 0299

-- 
Konstantin Olchanski
Data Acquisition Systems: The Bytes Must Flow!
Email: olchansk-at-triumf-dot-ca
Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada

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