Cannot delete gre tunnel
in [Linux Networking]
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From: sumitbee on 7 Dec 2007 14:08 I have a strange problem, where I cannot get rid of the first gre tunnel I created. This is on RHEL3 kernel 2.4.21-20.EL. It had given me errors while adding the tunnel: # modprobe ip_gre # ip tunnel add gre0 mode gre remote x.x.x.x local x.x.x.x ttl 255 ioctl: No buffer space available Now I just cannot get rid of gre0: # ip tunnel del gre0 ioctl: Operation not permitted I am root on the box. I have tried rebooting, removing mod ip_gre, at which point I can't see dev gre0 from ifconfig anymore, but then once I load the mocule, it comes back. I can create more tunnels, and delete them - just not gre0. # ip tunnel add gre1 mode gre remote 192.168.1.1 local 192.168.2.1 ttl 255 # ifconfig gre0 gre0 Link encap:UNSPEC HWaddr 00-00-00-00-7A-00- E4-64-00-00-00-00-00-00-00-00 NOARP MTU:1476 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) # ifconfig gre1 gre1 Link encap:UNSPEC HWaddr C0-A8-02-01-B2-00- E4-34-00-00-00-00-00-00-00-00 POINTOPOINT NOARP MTU:1476 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) # ip tunnel del gre1 # ip tunnel del gre0 ioctl: Operation not permitted # ifconfig gre1 gre1: error fetching interface information: Device not found # ifconfig gre0 gre0 Link encap:UNSPEC HWaddr 00-00-00-00-D7-00- E4-74-00-00-00-00-00-00-00-00 NOARP MTU:1476 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) # Can anyone please help? Thanks a bunch in advance! |