Re: [lwip-devel] PING_USE_SOCKETS==0 causes abort()

[Kieran Mansley]

On 22 Sep 2011, at 20:00, Gisle Vanem wrote:
> 
> Seems the handling of ICMP_ECHO in ping_recv() is too careless.
> Not knowing the details of the raw API, how does ping_recv() know it's even 
> receiving a IP-packet? Seems it's just assuming the packet
> is > PBUF_IP_HLEN.

Yes, it wouldn't surprise me if the ping code could be easily confused by 
malformed ICMP frames.  Patches that make it more robust without making the 
code bloated would be welcome.

Kieran