Hi, all:
I'm playing with Gre Tunnel programming in centos 6.
I wrote my program in these steps:
a, open /dev/net/tun device and ioctl with TUNSETIFF, get fd to tun
device, say tun0;
b, create one socket and use it to set tun0's ip address,
I remember I saw this behavior before. Mostly important thing is to find
out if the enc/dec goes well. I was having this problem that triggers
kernel to send out the icmp.
Banyan He
Blog: http://www.rootong.com
Email: ban...@rootong.com
On 4/10/2013 5:27 PM, yihect wrote:
At 2013-04-10 18:35:12,Banyan He ban...@rootong.com wrote:
I remember I saw this behavior before. Mostly important thing is to find
out if the enc/dec goes well. I was having this problem that triggers
kernel to send out the icmp.
enc/dec ?? You mean the content of ip header, which has
encryption/decryption I mean. The kernel can't decrypt the packet
eventually, kernel sends out the icmp. Just remember this part last time
I track it down to the kernel side. You may have to take a look at your
application why the gre doesn't setup correctly.
Banyan He
Blog:
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