On 9/16/16 1:00 PM, Cyrill Gorcunov wrote:
> I created veth pair and bound raw socket into it.
> 
> [root@pcs7 iproute2]# misc/ss -A raw
> State      Recv-Q Send-Q                                Local Address:Port    
>                                              Peer Address:Port                
> ESTAB      0      0                                         
> 127.0.0.1:ipproto-255                                            
> 127.0.0.10:ipproto-9090         
> UNCONN     0      0                                        
> 127.0.0.10:ipproto-255                                                     
> *:*                    
> UNCONN     0      0                                                
> :::ipv6-icmp                                                      :::*        
>             
> UNCONN     0      0                                                
> :::ipv6-icmp                                                      :::*        
>             
> ESTAB      0      0                                               
> ::1:ipproto-255                                                   
> ::1:ipproto-9091         
> UNCONN     0      0                                           
> ::1%vm1:ipproto-255                                                    :::*   
>                  
> [root@pcs7 iproute2]# 
> 
> [root@pcs7 iproute2]# misc/ss -aKw 'dev == vm1'
> State      Recv-Q Send-Q                                Local Address:Port    
>                                              Peer Address:Port                
> UNCONN     0      0                                           
> ::1%vm1:ipproto-255                                                    :::*   
>                  
> 
> [root@pcs7 iproute2]# misc/ss -A raw
> State      Recv-Q Send-Q                                Local Address:Port    
>                                              Peer Address:Port                
> ESTAB      0      0                                         
> 127.0.0.1:ipproto-255                                            
> 127.0.0.10:ipproto-9090         
> UNCONN     0      0                                        
> 127.0.0.10:ipproto-255                                                     
> *:*                    
> UNCONN     0      0                                                
> :::ipv6-icmp                                                      :::*        
>             
> UNCONN     0      0                                                
> :::ipv6-icmp                                                      :::*        
>             
> ESTAB      0      0                                               
> ::1:ipproto-255                                                   
> ::1:ipproto-9091         
> 
> so it get zapped out. Is there some other way to test it?
> 

I'm guessing you passed IPPROTO_RAW (255) as the protocol to socket(). If you 
pass something else (IPPROTO_ICMP for example) it won't work.

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