Thanks. Changed our code to use dummy0 instead. Working like a charm! On Mon, Mar 3, 2008 at 4:35 PM, Christopher Fowler <cfowler@xxxxxxxxxxxxxxxxxxx> wrote: > What about using VLAN on the dummy network driver? > > > > On Mon, 2008-03-03 at 16:14 -0500, Khoa Nguyen wrote: > > Hi, > > > > I notice 2.6.18 and 2.6.24 behave differently when I tried to > > configure a vlan interface over loopback (I know, it's silly to create > > a vlan over loopback, but our legacy app depends on it). But why under > > 2.6.24, a vlan over loopback assumes Ethernet encapsulation? And I > > can't assign IP address or bring this interface up under 2.6.24. What > > should I do to make sure it uses "Local Loopback" encapsulation? > > > > Thanks, > > Khoa > > > > > > 2.4.18.1 kernel: > > =========== > > [root@mss2 ~]# vconfig add lo 50 > > Added VLAN with VID == 50 to IF -:lo:- > > > > [root@mss2 ~]# ifconfig lo.50 192.0.2.2 netmask 255.255.255.255 up > > [root@mss2 ~]# ifconfig lo.50 > > lo.50 Link encap:Local Loopback > > inet addr:192.0.2.2 Mask:255.255.255.255 > > inet6 addr: ::1/128 Scope:Host > > UP LOOPBACK RUNNING MTU:16436 Metric:1 > > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:0 > > RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) > > > > > > > > 2.6.24 kernel > > ========= > > vconfig add lo 50 > > Added VLAN with VID == 50 to IF -:lo:- > > [root@mss2 os]# ifconfig lo.50 > > lo.50 Link encap:Ethernet HWaddr 00:00:00:00:00:00 > > LOOPBACK MTU:1500 Metric:1 > > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:0 > > RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) > > [root@mss2 os]# ifconfig lo.50 192.0.2.2 netmask 255.255.255.255 up > > SIOCSIFFLAGS: Invalid argument > > SIOCSIFFLAGS: Invalid argument > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-net" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
